15-4(2x+21)=3

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Solution for 15-4(2x+21)=3 equation:


Simplifying
15 + -4(2x + 21) = 3

Reorder the terms:
15 + -4(21 + 2x) = 3
15 + (21 * -4 + 2x * -4) = 3
15 + (-84 + -8x) = 3

Combine like terms: 15 + -84 = -69
-69 + -8x = 3

Solving
-69 + -8x = 3

Solving for variable 'x'.

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

Add '69' to each side of the equation.
-69 + 69 + -8x = 3 + 69

Combine like terms: -69 + 69 = 0
0 + -8x = 3 + 69
-8x = 3 + 69

Combine like terms: 3 + 69 = 72
-8x = 72

Divide each side by '-8'.
x = -9

Simplifying
x = -9

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