42=-1x+100

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Solution for 42=-1x+100 equation:


Simplifying
42 = -1x + 100

Reorder the terms:
42 = 100 + -1x

Solving
42 = 100 + -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.
42 + x = 100 + -1x + x

Combine like terms: -1x + x = 0
42 + x = 100 + 0
42 + x = 100

Add '-42' to each side of the equation.
42 + -42 + x = 100 + -42

Combine like terms: 42 + -42 = 0
0 + x = 100 + -42
x = 100 + -42

Combine like terms: 100 + -42 = 58
x = 58

Simplifying
x = 58

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