120-70=89-x

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Solution for 120-70=89-x equation:


Simplifying
120 + -70 = 89 + -1x

Combine like terms: 120 + -70 = 50
50 = 89 + -1x

Solving
50 = 89 + -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.
50 + x = 89 + -1x + x

Combine like terms: -1x + x = 0
50 + x = 89 + 0
50 + x = 89

Add '-50' to each side of the equation.
50 + -50 + x = 89 + -50

Combine like terms: 50 + -50 = 0
0 + x = 89 + -50
x = 89 + -50

Combine like terms: 89 + -50 = 39
x = 39

Simplifying
x = 39

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