x-8(2x+3)=21

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Solution for x-8(2x+3)=21 equation:


Simplifying
x + -8(2x + 3) = 21

Reorder the terms:
x + -8(3 + 2x) = 21
x + (3 * -8 + 2x * -8) = 21
x + (-24 + -16x) = 21

Reorder the terms:
-24 + x + -16x = 21

Combine like terms: x + -16x = -15x
-24 + -15x = 21

Solving
-24 + -15x = 21

Solving for variable 'x'.

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

Add '24' to each side of the equation.
-24 + 24 + -15x = 21 + 24

Combine like terms: -24 + 24 = 0
0 + -15x = 21 + 24
-15x = 21 + 24

Combine like terms: 21 + 24 = 45
-15x = 45

Divide each side by '-15'.
x = -3

Simplifying
x = -3

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