x-7.9=4.2

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Solution for x-7.9=4.2 equation: 


Simplifying
x + -7.9 = 4.2

Reorder the terms:
-7.9 + x = 4.2

Solving
-7.9 + x = 4.2

Solving for variable 'x'.

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

Add '7.9' to each side of the equation.
-7.9 + 7.9 + x = 4.2 + 7.9

Combine like terms: -7.9 + 7.9 = 0.0
0.0 + x = 4.2 + 7.9
x = 4.2 + 7.9

Combine like terms: 4.2 + 7.9 = 12.1
x = 12.1

Simplifying
x = 12.1

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