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

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


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

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

Reorder the terms:
21 + 2x = 3(6 + 4x)
21 + 2x = (6 * 3 + 4x * 3)
21 + 2x = (18 + 12x)

Solving
21 + 2x = 18 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
21 + 2x + -12x = 18 + 12x + -12x

Combine like terms: 2x + -12x = -10x
21 + -10x = 18 + 12x + -12x

Combine like terms: 12x + -12x = 0
21 + -10x = 18 + 0
21 + -10x = 18

Add '-21' to each side of the equation.
21 + -21 + -10x = 18 + -21

Combine like terms: 21 + -21 = 0
0 + -10x = 18 + -21
-10x = 18 + -21

Combine like terms: 18 + -21 = -3
-10x = -3

Divide each side by '-10'.
x = 0.3

Simplifying
x = 0.3

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