x+20y=-18

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Solution for x+20y=-18 equation:



X+20X=-18
We move all terms to the left:
X+20X-(-18)=0
We add all the numbers together, and all the variables
21X+18=0
We move all terms containing X to the left, all other terms to the right
21X=-18
X=-18/21
X=-6/7

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