x+45=135-x

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Solution for x+45=135-x equation:


Simplifying
x + 45 = 135 + -1x

Reorder the terms:
45 + x = 135 + -1x

Solving
45 + x = 135 + -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.
45 + x + x = 135 + -1x + x

Combine like terms: x + x = 2x
45 + 2x = 135 + -1x + x

Combine like terms: -1x + x = 0
45 + 2x = 135 + 0
45 + 2x = 135

Add '-45' to each side of the equation.
45 + -45 + 2x = 135 + -45

Combine like terms: 45 + -45 = 0
0 + 2x = 135 + -45
2x = 135 + -45

Combine like terms: 135 + -45 = 90
2x = 90

Divide each side by '2'.
x = 45

Simplifying
x = 45

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