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-4(x+5)=30
We move all terms to the left:
-4(x+5)-(30)=0
We multiply parentheses
-4x-20-30=0
We add all the numbers together, and all the variables
-4x-50=0
We move all terms containing x to the left, all other terms to the right
-4x=50
x=50/-4
x=-12+1/2
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