40+x=90

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Solution for 40+x=90 equation: 


Simplifying
40 + x = 90

Solving
40 + x = 90

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + x = 90 + -40

Combine like terms: 40 + -40 = 0
0 + x = 90 + -40
x = 90 + -40

Combine like terms: 90 + -40 = 50
x = 50

Simplifying
x = 50

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