X+2y=-40

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Solution for X+2y=-40 equation: 



X+2X=-40

We move all terms to the left:

X+2X-(-40)=0

We add all the numbers together, and all the variables

3X+40=0

We move all terms containing X to the left, all other terms to the right

3X=-40

X=-40/3

X=-13+1/3

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