-15=3(2x+7)

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Solution for -15=3(2x+7) equation:


Simplifying
-15 = 3(2x + 7)

Reorder the terms:
-15 = 3(7 + 2x)
-15 = (7 * 3 + 2x * 3)
-15 = (21 + 6x)

Solving
-15 = 21 + 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.
-15 + -6x = 21 + 6x + -6x

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

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

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

Combine like terms: 21 + 15 = 36
-6x = 36

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

Simplifying
x = -6

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