3(x+7)-(2x+6)=9

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Solution for 3(x+7)-(2x+6)=9 equation:


Simplifying
3(x + 7) + -1(2x + 6) = 9

Reorder the terms:
3(7 + x) + -1(2x + 6) = 9
(7 * 3 + x * 3) + -1(2x + 6) = 9
(21 + 3x) + -1(2x + 6) = 9

Reorder the terms:
21 + 3x + -1(6 + 2x) = 9
21 + 3x + (6 * -1 + 2x * -1) = 9
21 + 3x + (-6 + -2x) = 9

Reorder the terms:
21 + -6 + 3x + -2x = 9

Combine like terms: 21 + -6 = 15
15 + 3x + -2x = 9

Combine like terms: 3x + -2x = 1x
15 + 1x = 9

Solving
15 + 1x = 9

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 1x = 9 + -15

Combine like terms: 15 + -15 = 0
0 + 1x = 9 + -15
1x = 9 + -15

Combine like terms: 9 + -15 = -6
1x = -6

Divide each side by '1'.
x = -6

Simplifying
x = -6

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