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87=3x-4(1+4x)
We simplify the equation to the form, which is simple to understand
87=3x-4(1+4x)
Reorder the terms in parentheses
87=3x+(-4-16x)
Remove unnecessary parentheses
+87=+3x-4-16x
We move all terms containing x to the left and all other terms to the right.
-3x+16x=-4-87
We simplify left and right side of the equation.
+13x=-91
We divide both sides of the equation by 13 to get x.
x=-7
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