8x-91=4x-7

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Solution for 8x-91=4x-7 equation:


Simplifying
8x + -91 = 4x + -7

Reorder the terms:
-91 + 8x = 4x + -7

Reorder the terms:
-91 + 8x = -7 + 4x

Solving
-91 + 8x = -7 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-91 + 8x + -4x = -7 + 4x + -4x

Combine like terms: 8x + -4x = 4x
-91 + 4x = -7 + 4x + -4x

Combine like terms: 4x + -4x = 0
-91 + 4x = -7 + 0
-91 + 4x = -7

Add '91' to each side of the equation.
-91 + 91 + 4x = -7 + 91

Combine like terms: -91 + 91 = 0
0 + 4x = -7 + 91
4x = -7 + 91

Combine like terms: -7 + 91 = 84
4x = 84

Divide each side by '4'.
x = 21

Simplifying
x = 21

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