3x-18=7x-30

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Solution for 3x-18=7x-30 equation:


Simplifying
3x + -18 = 7x + -30

Reorder the terms:
-18 + 3x = 7x + -30

Reorder the terms:
-18 + 3x = -30 + 7x

Solving
-18 + 3x = -30 + 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.
-18 + 3x + -7x = -30 + 7x + -7x

Combine like terms: 3x + -7x = -4x
-18 + -4x = -30 + 7x + -7x

Combine like terms: 7x + -7x = 0
-18 + -4x = -30 + 0
-18 + -4x = -30

Add '18' to each side of the equation.
-18 + 18 + -4x = -30 + 18

Combine like terms: -18 + 18 = 0
0 + -4x = -30 + 18
-4x = -30 + 18

Combine like terms: -30 + 18 = -12
-4x = -12

Divide each side by '-4'.
x = 3

Simplifying
x = 3

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