(3x+21)=(6x+15)

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Solution for (3x+21)=(6x+15) equation:


Simplifying
(3x + 21) = (6x + 15)

Reorder the terms:
(21 + 3x) = (6x + 15)

Remove parenthesis around (21 + 3x)
21 + 3x = (6x + 15)

Reorder the terms:
21 + 3x = (15 + 6x)

Remove parenthesis around (15 + 6x)
21 + 3x = 15 + 6x

Solving
21 + 3x = 15 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
21 + 3x + -6x = 15 + 6x + -6x

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

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

Add '-21' to each side of the equation.
21 + -21 + -3x = 15 + -21

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

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

Divide each side by '-3'.
x = 2

Simplifying
x = 2

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