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 = 0.7
x = 0.7

Simplifying
x = 0.7

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