3x+123=7x+155

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Solution for 3x+123=7x+155 equation:


Simplifying
3x + 123 = 7x + 155

Reorder the terms:
123 + 3x = 7x + 155

Reorder the terms:
123 + 3x = 155 + 7x

Solving
123 + 3x = 155 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
123 + 3x + -7x = 155 + 7x + -7x

Combine like terms: 3x + -7x = -4x
123 + -4x = 155 + 7x + -7x

Combine like terms: 7x + -7x = 0
123 + -4x = 155 + 0
123 + -4x = 155

Add '-123' to each side of the equation.
123 + -123 + -4x = 155 + -123

Combine like terms: 123 + -123 = 0
0 + -4x = 155 + -123
-4x = 155 + -123

Combine like terms: 155 + -123 = 32
-4x = 32

Divide each side by '-4'.
x = -8

Simplifying
x = -8

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