12+4.2x=3x

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Solution for 12+4.2x=3x equation:


Simplifying
12 + 4.2x = 3x

Solving
12 + 4.2x = 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
12 + 4.2x + -3x = 3x + -3x

Combine like terms: 4.2x + -3x = 1.2x
12 + 1.2x = 3x + -3x

Combine like terms: 3x + -3x = 0
12 + 1.2x = 0

Add '-12' to each side of the equation.
12 + -12 + 1.2x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 1.2x = 0 + -12
1.2x = 0 + -12

Combine like terms: 0 + -12 = -12
1.2x = -12

Divide each side by '1.2'.
x = -10

Simplifying
x = -10

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