78+3x=7x+18

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Solution for 78+3x=7x+18 equation:


Simplifying
78 + 3x = 7x + 18

Reorder the terms:
78 + 3x = 18 + 7x

Solving
78 + 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.
78 + 3x + -7x = 18 + 7x + -7x

Combine like terms: 3x + -7x = -4x
78 + -4x = 18 + 7x + -7x

Combine like terms: 7x + -7x = 0
78 + -4x = 18 + 0
78 + -4x = 18

Add '-78' to each side of the equation.
78 + -78 + -4x = 18 + -78

Combine like terms: 78 + -78 = 0
0 + -4x = 18 + -78
-4x = 18 + -78

Combine like terms: 18 + -78 = -60
-4x = -60

Divide each side by '-4'.
x = 15

Simplifying
x = 15

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