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-8(7x-1)+7=-489
We move all terms to the left:
-8(7x-1)+7-(-489)=0
We add all the numbers together, and all the variables
-8(7x-1)+496=0
We multiply parentheses
-56x+8+496=0
We add all the numbers together, and all the variables
-56x+504=0
We move all terms containing x to the left, all other terms to the right
-56x=-504
x=-504/-56
x=+9
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