8x+77=9x-4

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Solution for 8x+77=9x-4 equation:


Simplifying
8x + 77 = 9x + -4

Reorder the terms:
77 + 8x = 9x + -4

Reorder the terms:
77 + 8x = -4 + 9x

Solving
77 + 8x = -4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
77 + 8x + -9x = -4 + 9x + -9x

Combine like terms: 8x + -9x = -1x
77 + -1x = -4 + 9x + -9x

Combine like terms: 9x + -9x = 0
77 + -1x = -4 + 0
77 + -1x = -4

Add '-77' to each side of the equation.
77 + -77 + -1x = -4 + -77

Combine like terms: 77 + -77 = 0
0 + -1x = -4 + -77
-1x = -4 + -77

Combine like terms: -4 + -77 = -81
-1x = -81

Divide each side by '-1'.
x = 81

Simplifying
x = 81

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