21-(x+1)=5(x+5)

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


Simplifying
21 + -1(x + 1) = 5(x + 5)

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

Combine like terms: 21 + -1 = 20
20 + -1x = 5(x + 5)

Reorder the terms:
20 + -1x = 5(5 + x)
20 + -1x = (5 * 5 + x * 5)
20 + -1x = (25 + 5x)

Solving
20 + -1x = 25 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
20 + -1x + -5x = 25 + 5x + -5x

Combine like terms: -1x + -5x = -6x
20 + -6x = 25 + 5x + -5x

Combine like terms: 5x + -5x = 0
20 + -6x = 25 + 0
20 + -6x = 25

Add '-20' to each side of the equation.
20 + -20 + -6x = 25 + -20

Combine like terms: 20 + -20 = 0
0 + -6x = 25 + -20
-6x = 25 + -20

Combine like terms: 25 + -20 = 5
-6x = 5

Divide each side by '-6'.
x = -0.8333333333

Simplifying
x = -0.8333333333

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