5x+8(87-x)=639

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Solution for 5x+8(87-x)=639 equation:


Simplifying
5x + 8(87 + -1x) = 639
5x + (87 * 8 + -1x * 8) = 639
5x + (696 + -8x) = 639

Reorder the terms:
696 + 5x + -8x = 639

Combine like terms: 5x + -8x = -3x
696 + -3x = 639

Solving
696 + -3x = 639

Solving for variable 'x'.

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

Add '-696' to each side of the equation.
696 + -696 + -3x = 639 + -696

Combine like terms: 696 + -696 = 0
0 + -3x = 639 + -696
-3x = 639 + -696

Combine like terms: 639 + -696 = -57
-3x = -57

Divide each side by '-3'.
x = 19

Simplifying
x = 19

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