3x+12=7x+18

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Solution for 3x+12=7x+18 equation:


Simplifying
3x + 12 = 7x + 18

Reorder the terms:
12 + 3x = 7x + 18

Reorder the terms:
12 + 3x = 18 + 7x

Solving
12 + 3x = 18 + 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.
12 + 3x + -7x = 18 + 7x + -7x

Combine like terms: 3x + -7x = -4x
12 + -4x = 18 + 7x + -7x

Combine like terms: 7x + -7x = 0
12 + -4x = 18 + 0
12 + -4x = 18

Add '-12' to each side of the equation.
12 + -12 + -4x = 18 + -12

Combine like terms: 12 + -12 = 0
0 + -4x = 18 + -12
-4x = 18 + -12

Combine like terms: 18 + -12 = 6
-4x = 6

Divide each side by '-4'.
x = -1.5

Simplifying
x = -1.5

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