3-13+2x+45=90

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Solution for 3-13+2x+45=90 equation:


Simplifying
3 + -13 + 2x + 45 = 90

Reorder the terms:
3 + -13 + 45 + 2x = 90

Combine like terms: 3 + -13 = -10
-10 + 45 + 2x = 90

Combine like terms: -10 + 45 = 35
35 + 2x = 90

Solving
35 + 2x = 90

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + 2x = 90 + -35

Combine like terms: 35 + -35 = 0
0 + 2x = 90 + -35
2x = 90 + -35

Combine like terms: 90 + -35 = 55
2x = 55

Divide each side by '2'.
x = 27.5

Simplifying
x = 27.5

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