42-x=45-2x

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Solution for 42-x=45-2x equation:


Simplifying
42 + -1x = 45 + -2x

Solving
42 + -1x = 45 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
42 + -1x + 2x = 45 + -2x + 2x

Combine like terms: -1x + 2x = 1x
42 + 1x = 45 + -2x + 2x

Combine like terms: -2x + 2x = 0
42 + 1x = 45 + 0
42 + 1x = 45

Add '-42' to each side of the equation.
42 + -42 + 1x = 45 + -42

Combine like terms: 42 + -42 = 0
0 + 1x = 45 + -42
1x = 45 + -42

Combine like terms: 45 + -42 = 3
1x = 3

Divide each side by '1'.
x = 3

Simplifying
x = 3

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