7.2-12=4.2-x

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Solution for 7.2-12=4.2-x equation:


Simplifying
7.2 + -12 = 4.2 + -1x

Combine like terms: 7.2 + -12 = -4.8
-4.8 = 4.2 + -1x

Solving
-4.8 = 4.2 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-4.8 + x = 4.2 + -1x + x

Combine like terms: -1x + x = 0
-4.8 + x = 4.2 + 0
-4.8 + x = 4.2

Add '4.8' to each side of the equation.
-4.8 + 4.8 + x = 4.2 + 4.8

Combine like terms: -4.8 + 4.8 = 0.0
0.0 + x = 4.2 + 4.8
x = 4.2 + 4.8

Combine like terms: 4.2 + 4.8 = 9
x = 9

Simplifying
x = 9

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