7x-9=4-x+90

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Solution for 7x-9=4-x+90 equation:


Simplifying
7x + -9 = 4 + -1x + 90

Reorder the terms:
-9 + 7x = 4 + -1x + 90

Reorder the terms:
-9 + 7x = 4 + 90 + -1x

Combine like terms: 4 + 90 = 94
-9 + 7x = 94 + -1x

Solving
-9 + 7x = 94 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-9 + 7x + x = 94 + -1x + x

Combine like terms: 7x + x = 8x
-9 + 8x = 94 + -1x + x

Combine like terms: -1x + x = 0
-9 + 8x = 94 + 0
-9 + 8x = 94

Add '9' to each side of the equation.
-9 + 9 + 8x = 94 + 9

Combine like terms: -9 + 9 = 0
0 + 8x = 94 + 9
8x = 94 + 9

Combine like terms: 94 + 9 = 103
8x = 103

Divide each side by '8'.
x = 12.875

Simplifying
x = 12.875

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