ax+7=87-4x

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Solution for ax+7=87-4x equation: 


Simplifying
ax + 7 = 87 + -4x

Reorder the terms:
7 + ax = 87 + -4x

Solving
7 + ax = 87 + -4x

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + ax = 87 + -7 + -4x

Combine like terms: 7 + -7 = 0
0 + ax = 87 + -7 + -4x
ax = 87 + -7 + -4x

Combine like terms: 87 + -7 = 80
ax = 80 + -4x

Divide each side by 'x'.
a = 80x-1 + -4

Simplifying
a = 80x-1 + -4

Reorder the terms:
a = -4 + 80x-1

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