7x-30=5x-15

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Solution for 7x-30=5x-15 equation:


Simplifying
7x + -30 = 5x + -15

Reorder the terms:
-30 + 7x = 5x + -15

Reorder the terms:
-30 + 7x = -15 + 5x

Solving
-30 + 7x = -15 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-30 + 7x + -5x = -15 + 5x + -5x

Combine like terms: 7x + -5x = 2x
-30 + 2x = -15 + 5x + -5x

Combine like terms: 5x + -5x = 0
-30 + 2x = -15 + 0
-30 + 2x = -15

Add '30' to each side of the equation.
-30 + 30 + 2x = -15 + 30

Combine like terms: -30 + 30 = 0
0 + 2x = -15 + 30
2x = -15 + 30

Combine like terms: -15 + 30 = 15
2x = 15

Divide each side by '2'.
x = 7.5

Simplifying
x = 7.5

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