00:04
When looking at an equation like the one in number 10 here, the first step in order to solve for x is to distribute those values that the set of parentheses are being multiplied by.
00:16
So when we do that in this case, we're going to distribute the two on the left hand side, which means we'll do two times x to give us 2x and 2 times negative 1, which gives us negative 2.
00:33
On the right -hand side, we have x, and we'll distribute the full negative 3.
00:44
So negative 3x, and then a negative 3 times a positive 1 is minus 3.
00:52
From here, we'll want to combine like terms.
00:55
So on the left -hand side, we'll have 2x plus 1, and on the right -hand side we'll have negative 2x minus 3.
01:06
From here we want to isolate the variable on one side.
01:09
So we'll move the 2x over to the left by adding 2x to both sides.
01:17
So on the left hand side this becomes 4x plus 1.
01:22
And on the right hand side we're left with just that minus 3.
01:27
Next we'll continue to isolate by subtracting 1 from both sides, leaving us with 4x equals negative 4.
01:35
And then finally to do this step find x, we will divide both sides by you...