42-0.2x=40

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Solution for 42-0.2x=40 equation: 


Simplifying
42 + -0.2x = 40

Solving
42 + -0.2x = 40

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + -0.2x = 40 + -42

Combine like terms: 42 + -42 = 0
0 + -0.2x = 40 + -42
-0.2x = 40 + -42

Combine like terms: 40 + -42 = -2
-0.2x = -2

Divide each side by '-0.2'.
x = 10

Simplifying
x = 10

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