3x-7(8-x)=9

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Solution for 3x-7(8-x)=9 equation:


Simplifying
3x + -7(8 + -1x) = 9
3x + (8 * -7 + -1x * -7) = 9
3x + (-56 + 7x) = 9

Reorder the terms:
-56 + 3x + 7x = 9

Combine like terms: 3x + 7x = 10x
-56 + 10x = 9

Solving
-56 + 10x = 9

Solving for variable 'x'.

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

Add '56' to each side of the equation.
-56 + 56 + 10x = 9 + 56

Combine like terms: -56 + 56 = 0
0 + 10x = 9 + 56
10x = 9 + 56

Combine like terms: 9 + 56 = 65
10x = 65

Divide each side by '10'.
x = 6.5

Simplifying
x = 6.5

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