21=5(4x-1)

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Solution for 21=5(4x-1) equation:


Simplifying
21 = 5(4x + -1)

Reorder the terms:
21 = 5(-1 + 4x)
21 = (-1 * 5 + 4x * 5)
21 = (-5 + 20x)

Solving
21 = -5 + 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.
21 + -20x = -5 + 20x + -20x

Combine like terms: 20x + -20x = 0
21 + -20x = -5 + 0
21 + -20x = -5

Add '-21' to each side of the equation.
21 + -21 + -20x = -5 + -21

Combine like terms: 21 + -21 = 0
0 + -20x = -5 + -21
-20x = -5 + -21

Combine like terms: -5 + -21 = -26
-20x = -26

Divide each side by '-20'.
x = 1.3

Simplifying
x = 1.3

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