4(x-8)+21=21

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Solution for 4(x-8)+21=21 equation: 


Simplifying
4(x + -8) + 21 = 21

Reorder the terms:
4(-8 + x) + 21 = 21
(-8 * 4 + x * 4) + 21 = 21
(-32 + 4x) + 21 = 21

Reorder the terms:
-32 + 21 + 4x = 21

Combine like terms: -32 + 21 = -11
-11 + 4x = 21

Solving
-11 + 4x = 21

Solving for variable 'x'.

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

Add '11' to each side of the equation.
-11 + 11 + 4x = 21 + 11

Combine like terms: -11 + 11 = 0
0 + 4x = 21 + 11
4x = 21 + 11

Combine like terms: 21 + 11 = 32
4x = 32

Divide each side by '4'.
x = 8

Simplifying
x = 8

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