30-x+20=45

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Solution for 30-x+20=45 equation:


Simplifying
30 + -1x + 20 = 45

Reorder the terms:
30 + 20 + -1x = 45

Combine like terms: 30 + 20 = 50
50 + -1x = 45

Solving
50 + -1x = 45

Solving for variable 'x'.

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

Add '-50' to each side of the equation.
50 + -50 + -1x = 45 + -50

Combine like terms: 50 + -50 = 0
0 + -1x = 45 + -50
-1x = 45 + -50

Combine like terms: 45 + -50 = -5
-1x = -5

Divide each side by '-1'.
x = 5

Simplifying
x = 5

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