21-3(2x-4)=63

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Solution for 21-3(2x-4)=63 equation:


Simplifying
21 + -3(2x + -4) = 63

Reorder the terms:
21 + -3(-4 + 2x) = 63
21 + (-4 * -3 + 2x * -3) = 63
21 + (12 + -6x) = 63

Combine like terms: 21 + 12 = 33
33 + -6x = 63

Solving
33 + -6x = 63

Solving for variable 'x'.

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

Add '-33' to each side of the equation.
33 + -33 + -6x = 63 + -33

Combine like terms: 33 + -33 = 0
0 + -6x = 63 + -33
-6x = 63 + -33

Combine like terms: 63 + -33 = 30
-6x = 30

Divide each side by '-6'.
x = -5

Simplifying
x = -5

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