21x-4=5(4x+3)-11

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Solution for 21x-4=5(4x+3)-11 equation:


Simplifying
21x + -4 = 5(4x + 3) + -11

Reorder the terms:
-4 + 21x = 5(4x + 3) + -11

Reorder the terms:
-4 + 21x = 5(3 + 4x) + -11
-4 + 21x = (3 * 5 + 4x * 5) + -11
-4 + 21x = (15 + 20x) + -11

Reorder the terms:
-4 + 21x = 15 + -11 + 20x

Combine like terms: 15 + -11 = 4
-4 + 21x = 4 + 20x

Solving
-4 + 21x = 4 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
-4 + 21x + -20x = 4 + 20x + -20x

Combine like terms: 21x + -20x = 1x
-4 + 1x = 4 + 20x + -20x

Combine like terms: 20x + -20x = 0
-4 + 1x = 4 + 0
-4 + 1x = 4

Add '4' to each side of the equation.
-4 + 4 + 1x = 4 + 4

Combine like terms: -4 + 4 = 0
0 + 1x = 4 + 4
1x = 4 + 4

Combine like terms: 4 + 4 = 8
1x = 8

Divide each side by '1'.
x = 8

Simplifying
x = 8

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