42=7x-9+2x

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Solution for 42=7x-9+2x equation:


Simplifying
42 = 7x + -9 + 2x

Reorder the terms:
42 = -9 + 7x + 2x

Combine like terms: 7x + 2x = 9x
42 = -9 + 9x

Solving
42 = -9 + 9x

Solving for variable 'x'.

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

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

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

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

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

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

Divide each side by '-9'.
x = 5.666666667

Simplifying
x = 5.666666667

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