4x+12=7x+42

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Solution for 4x+12=7x+42 equation:


Simplifying
4x + 12 = 7x + 42

Reorder the terms:
12 + 4x = 7x + 42

Reorder the terms:
12 + 4x = 42 + 7x

Solving
12 + 4x = 42 + 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 + 4x + -7x = 42 + 7x + -7x

Combine like terms: 4x + -7x = -3x
12 + -3x = 42 + 7x + -7x

Combine like terms: 7x + -7x = 0
12 + -3x = 42 + 0
12 + -3x = 42

Add '-12' to each side of the equation.
12 + -12 + -3x = 42 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = 42 + -12
-3x = 42 + -12

Combine like terms: 42 + -12 = 30
-3x = 30

Divide each side by '-3'.
x = -10

Simplifying
x = -10

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