72-3x=-84-7x

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Solution for 72-3x=-84-7x equation:


Simplifying
72 + -3x = -84 + -7x

Solving
72 + -3x = -84 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
72 + -3x + 7x = -84 + -7x + 7x

Combine like terms: -3x + 7x = 4x
72 + 4x = -84 + -7x + 7x

Combine like terms: -7x + 7x = 0
72 + 4x = -84 + 0
72 + 4x = -84

Add '-72' to each side of the equation.
72 + -72 + 4x = -84 + -72

Combine like terms: 72 + -72 = 0
0 + 4x = -84 + -72
4x = -84 + -72

Combine like terms: -84 + -72 = -156
4x = -156

Divide each side by '4'.
x = -39

Simplifying
x = -39

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