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-5(7-9x)=4
We move all terms to the left:
-5(7-9x)-(4)=0
We add all the numbers together, and all the variables
-5(-9x+7)-4=0
We multiply parentheses
45x-35-4=0
We add all the numbers together, and all the variables
45x-39=0
We move all terms containing x to the left, all other terms to the right
45x=39
x=39/45
x=13/15
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