7(x+3)-2(x-4)=9

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Solution for 7(x+3)-2(x-4)=9 equation:


Simplifying
7(x + 3) + -2(x + -4) = 9

Reorder the terms:
7(3 + x) + -2(x + -4) = 9
(3 * 7 + x * 7) + -2(x + -4) = 9
(21 + 7x) + -2(x + -4) = 9

Reorder the terms:
21 + 7x + -2(-4 + x) = 9
21 + 7x + (-4 * -2 + x * -2) = 9
21 + 7x + (8 + -2x) = 9

Reorder the terms:
21 + 8 + 7x + -2x = 9

Combine like terms: 21 + 8 = 29
29 + 7x + -2x = 9

Combine like terms: 7x + -2x = 5x
29 + 5x = 9

Solving
29 + 5x = 9

Solving for variable 'x'.

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

Add '-29' to each side of the equation.
29 + -29 + 5x = 9 + -29

Combine like terms: 29 + -29 = 0
0 + 5x = 9 + -29
5x = 9 + -29

Combine like terms: 9 + -29 = -20
5x = -20

Divide each side by '5'.
x = -4

Simplifying
x = -4

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