2x-3(x+5)=-21

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Solution for 2x-3(x+5)=-21 equation:


Simplifying
2x + -3(x + 5) = -21

Reorder the terms:
2x + -3(5 + x) = -21
2x + (5 * -3 + x * -3) = -21
2x + (-15 + -3x) = -21

Reorder the terms:
-15 + 2x + -3x = -21

Combine like terms: 2x + -3x = -1x
-15 + -1x = -21

Solving
-15 + -1x = -21

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 + -1x = -21 + 15

Combine like terms: -15 + 15 = 0
0 + -1x = -21 + 15
-1x = -21 + 15

Combine like terms: -21 + 15 = -6
-1x = -6

Divide each side by '-1'.
x = 6

Simplifying
x = 6

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