x-20+40=90

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Solution for x-20+40=90 equation: 


Simplifying
x + -20 + 40 = 90

Reorder the terms:
-20 + 40 + x = 90

Combine like terms: -20 + 40 = 20
20 + x = 90

Solving
20 + x = 90

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + x = 90 + -20

Combine like terms: 20 + -20 = 0
0 + x = 90 + -20
x = 90 + -20

Combine like terms: 90 + -20 = 70
x = 70

Simplifying
x = 70

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