x-3.5=4.2

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Solution for x-3.5=4.2 equation: 


Simplifying
x + -3.5 = 4.2

Reorder the terms:
-3.5 + x = 4.2

Solving
-3.5 + x = 4.2

Solving for variable 'x'.

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

Add '3.5' to each side of the equation.
-3.5 + 3.5 + x = 4.2 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + x = 4.2 + 3.5
x = 4.2 + 3.5

Combine like terms: 4.2 + 3.5 = 7.7
x = 7.7

Simplifying
x = 7.7

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