9x-(2x-9)=51

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Solution for 9x-(2x-9)=51 equation:


Simplifying
9x + -1(2x + -9) = 51

Reorder the terms:
9x + -1(-9 + 2x) = 51
9x + (-9 * -1 + 2x * -1) = 51
9x + (9 + -2x) = 51

Reorder the terms:
9 + 9x + -2x = 51

Combine like terms: 9x + -2x = 7x
9 + 7x = 51

Solving
9 + 7x = 51

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 7x = 51 + -9

Combine like terms: 9 + -9 = 0
0 + 7x = 51 + -9
7x = 51 + -9

Combine like terms: 51 + -9 = 42
7x = 42

Divide each side by '7'.
x = 6

Simplifying
x = 6

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