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-207-6x=-15+90
We move all terms to the left:
-207-6x-(-15+90)=0
We add all the numbers together, and all the variables
-6x-207-75=0
We add all the numbers together, and all the variables
-6x-282=0
We move all terms containing x to the left, all other terms to the right
-6x=282
x=282/-6
x=-47
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