42=2x-9

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Solution for 42=2x-9 equation:


Simplifying
42 = 2x + -9

Reorder the terms:
42 = -9 + 2x

Solving
42 = -9 + 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 + -2x = -9 + 2x + -2x

Combine like terms: 2x + -2x = 0
42 + -2x = -9 + 0
42 + -2x = -9

Add '-42' to each side of the equation.
42 + -42 + -2x = -9 + -42

Combine like terms: 42 + -42 = 0
0 + -2x = -9 + -42
-2x = -9 + -42

Combine like terms: -9 + -42 = -51
-2x = -51

Divide each side by '-2'.
x = 25.5

Simplifying
x = 25.5

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