15-3(x+5)=6x-21

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Solution for 15-3(x+5)=6x-21 equation:


Simplifying
15 + -3(x + 5) = 6x + -21

Reorder the terms:
15 + -3(5 + x) = 6x + -21
15 + (5 * -3 + x * -3) = 6x + -21
15 + (-15 + -3x) = 6x + -21

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

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

Solving
-3x = -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.
-3x + -6x = -21 + 6x + -6x

Combine like terms: -3x + -6x = -9x
-9x = -21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-9x = -21 + 0
-9x = -21

Divide each side by '-9'.
x = 2.333333333

Simplifying
x = 2.333333333

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