20x-30=15x-45

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Solution for 20x-30=15x-45 equation:


Simplifying
20x + -30 = 15x + -45

Reorder the terms:
-30 + 20x = 15x + -45

Reorder the terms:
-30 + 20x = -45 + 15x

Solving
-30 + 20x = -45 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
-30 + 20x + -15x = -45 + 15x + -15x

Combine like terms: 20x + -15x = 5x
-30 + 5x = -45 + 15x + -15x

Combine like terms: 15x + -15x = 0
-30 + 5x = -45 + 0
-30 + 5x = -45

Add '30' to each side of the equation.
-30 + 30 + 5x = -45 + 30

Combine like terms: -30 + 30 = 0
0 + 5x = -45 + 30
5x = -45 + 30

Combine like terms: -45 + 30 = -15
5x = -15

Divide each side by '5'.
x = -3

Simplifying
x = -3

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