3(x+4)-2(x+6)=21

Solution for 3(x+4)-2(x+6)=21 equation:

Simplifying
3(x + 4) + -2(x + 6) = 21

Reorder the terms:
3(4 + x) + -2(x + 6) = 21
(4 * 3 + x * 3) + -2(x + 6) = 21
(12 + 3x) + -2(x + 6) = 21

Reorder the terms:
12 + 3x + -2(6 + x) = 21
12 + 3x + (6 * -2 + x * -2) = 21
12 + 3x + (-12 + -2x) = 21

Reorder the terms:
12 + -12 + 3x + -2x = 21

Combine like terms: 12 + -12 = 0
0 + 3x + -2x = 21
3x + -2x = 21

Combine like terms: 3x + -2x = 1x
1x = 21

Solving
1x = 21

Solving for variable 'x'.

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

Divide each side by '1'.
x = 21

Simplifying
x = 21