21-3(2x+5)+x=-4

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Solution for 21-3(2x+5)+x=-4 equation:


Simplifying
21 + -3(2x + 5) + x = -4

Reorder the terms:
21 + -3(5 + 2x) + x = -4
21 + (5 * -3 + 2x * -3) + x = -4
21 + (-15 + -6x) + x = -4

Combine like terms: 21 + -15 = 6
6 + -6x + x = -4

Combine like terms: -6x + x = -5x
6 + -5x = -4

Solving
6 + -5x = -4

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + -5x = -4 + -6

Combine like terms: 6 + -6 = 0
0 + -5x = -4 + -6
-5x = -4 + -6

Combine like terms: -4 + -6 = -10
-5x = -10

Divide each side by '-5'.
x = 2

Simplifying
x = 2

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