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Solve each equation, if possible. $$ 0.3-2 x=-0.9…

01:24

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Problem 1 Problem 2 Problem 3 Problem 4 Problem 5 Problem 6 Problem 7 Problem 8 Problem 9 Problem 10 Problem 11 Problem 12 Problem 13 Problem 14 Problem 15 Problem 16 Problem 17 Problem 18 Problem 19 Problem 20 Problem 21 Problem 22 Problem 23 Problem 24 Problem 25 Problem 26 Problem 27 Problem 28 Problem 29 Problem 30 Problem 31 Problem 32 Problem 33 Problem 34 Problem 35 Problem 36 Problem 37 Problem 38 Problem 39 Problem 40 Problem 41 Problem 42 Problem 43 Problem 44 Problem 45 Problem 46 Problem 47 Problem 48 Problem 49 Problem 50 Problem 51 Problem 52 Problem 53 Problem 54 Problem 55 Problem 56 Problem 57 Problem 58 Problem 58 Problem 59 Problem 60 Problem 61 Problem 62 Problem 63 Problem 64 Problem 65 Problem 66 Problem 67 Problem 68 Problem 69 Problem 70 Problem 71 Problem 72 Problem 73 Problem 74 Problem 75 Problem 76 Problem 77 Problem 78 Problem 79 Problem 80 Problem 81 Problem 82 Problem 83 Problem 84 Problem 85 Problem 86 Problem 87 Problem 88 Problem 89 Problem 90 Problem 91 Problem 92 Problem 94 Problem 95 Problem 96 Problem 97 Problem 98 Problem 99 Problem 100 Problem 101 Problem 102 Problem 103 Problem 104 Problem 105 Problem 106 Problem 107 Problem 108 Problem 109 Problem 110 Problem 111 Problem 112 Problem 113 Problem 114 Problem 115 Problem 116 Problem 117 Problem 118 Problem 119 Problem 120 Problem 121 Problem 122 Problem 123 Problem 124

Problem 73 Medium Difficulty

Solve each equation, if possible.
$$
0.7-4 y=1.7
$$

Answer

-0.25

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Algebra

Elementary and Intermediate Algebra

Chapter 2

Equations, Inequalities, and Problem Solving

Section 2

More about Solving Equations

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Algebra Topics That are Reviewed at the Start of the Semester

Equations and Inequalities

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Video Transcript

okay, I'm gonna solve for 0.7 minus four, y equals 1.7 and I can work with the decimals, or I could just clear them right out. So this is in the 10th space. This is in the 10th space. I'm gonna go ahead and multiply every single term by 10 which will clear out that decimal. So 10 times 100.7 is seven, 10 times negative for why is negative 40 y and 1.7 times 10 is 17. Next, I'm going to clear everything on the left to get that. Why alone? So we'll start on the outside and subtract seven. Since it's positive, we want to undo it. And since I have negative 40 times why, I will undo that by dividing by negative 40 which means I'm gonna have why equals negative 1/4. Let's check that that works. I can plug it into the original, or I can plug it into the version that's 10 times larger up to you. I'm gonna go ahead and plug into the version that's 10 times larger because it's gonna be slightly easier to plug into. So seven minus 40 times negative. 1/4 is that equal to 17. This is the version I'm doing. Okay, so seven. And then I'm gonna have plus cause I have minus minus four goes into 40 10 times, so that will be add. 10 equals 17 and yes, 17 equals 17. So why is negative 1/4?

We have video lessons for 94.35% of the questions in this textbook

Alan S. Tussy, R. David Gustafson

Elementary and Intermediate Algebra

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