Question

In the following exercises, solve the systems of equations by elimination. $\left\{\begin{array}{l}2 x+9 y=-4 \\ 3 x+13 y=-7\end{array}\right.$

   In the following exercises, solve the systems of equations by elimination.
$\left\{\begin{array}{l}2 x+9 y=-4 \\ 3 x+13 y=-7\end{array}\right.$
Intermediate Algebra
Intermediate Algebra
Lynn Marecek 1st Edition
Chapter 4, Problem 55 ↓
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In the following exercises, solve the systems of equations by elimination. $\left\{\begin{array}{l}2 x+9 y=-4 \\ 3 x+13 y=-7\end{array}\right.$
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Transcript

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00:01 We need to solve the following system.
00:03 So we're going to cancel out our x's.
00:04 We're going to multiply by 3 and negative 2.
00:08 So we get 6x plus 27y is equal to negative 12.
00:13 On the bottom, we get negative 6x minus 26y is equal to positive 14.
00:21 Our x is cancel out.
00:23 We get y is equal to 2.
00:25 We're going to take that and plug it back into the top equation...
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