3(x+2)-21=0

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Solution for 3(x+2)-21=0 equation:


Simplifying
3(x + 2) + -21 = 0

Reorder the terms:
3(2 + x) + -21 = 0
(2 * 3 + x * 3) + -21 = 0
(6 + 3x) + -21 = 0

Reorder the terms:
6 + -21 + 3x = 0

Combine like terms: 6 + -21 = -15
-15 + 3x = 0

Solving
-15 + 3x = 0

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 + 3x = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 3x = 0 + 15
3x = 0 + 15

Combine like terms: 0 + 15 = 15
3x = 15

Divide each side by '3'.
x = 5

Simplifying
x = 5

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