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-10=-2x-5x
We move all terms to the left:
-10-(-2x-5x)=0
We add all the numbers together, and all the variables
-(-7x)-10=0
We get rid of parentheses
7x-10=0
We move all terms containing x to the left, all other terms to the right
7x=10
x=10/7
x=1+3/7
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