5(x+5)+8(-x+8)=77

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Solution for 5(x+5)+8(-x+8)=77 equation:


Simplifying
5(x + 5) + 8(-1x + 8) = 77

Reorder the terms:
5(5 + x) + 8(-1x + 8) = 77
(5 * 5 + x * 5) + 8(-1x + 8) = 77
(25 + 5x) + 8(-1x + 8) = 77

Reorder the terms:
25 + 5x + 8(8 + -1x) = 77
25 + 5x + (8 * 8 + -1x * 8) = 77
25 + 5x + (64 + -8x) = 77

Reorder the terms:
25 + 64 + 5x + -8x = 77

Combine like terms: 25 + 64 = 89
89 + 5x + -8x = 77

Combine like terms: 5x + -8x = -3x
89 + -3x = 77

Solving
89 + -3x = 77

Solving for variable 'x'.

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

Add '-89' to each side of the equation.
89 + -89 + -3x = 77 + -89

Combine like terms: 89 + -89 = 0
0 + -3x = 77 + -89
-3x = 77 + -89

Combine like terms: 77 + -89 = -12
-3x = -12

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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