7x+15=4x-30

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Solution for 7x+15=4x-30 equation:


Simplifying
7x + 15 = 4x + -30

Reorder the terms:
15 + 7x = 4x + -30

Reorder the terms:
15 + 7x = -30 + 4x

Solving
15 + 7x = -30 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
15 + 7x + -4x = -30 + 4x + -4x

Combine like terms: 7x + -4x = 3x
15 + 3x = -30 + 4x + -4x

Combine like terms: 4x + -4x = 0
15 + 3x = -30 + 0
15 + 3x = -30

Add '-15' to each side of the equation.
15 + -15 + 3x = -30 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = -30 + -15
3x = -30 + -15

Combine like terms: -30 + -15 = -45
3x = -45

Divide each side by '3'.
x = -15

Simplifying
x = -15

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