5(x+1)-1=21

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


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

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

Reorder the terms:
5 + -1 + 5x = 21

Combine like terms: 5 + -1 = 4
4 + 5x = 21

Solving
4 + 5x = 21

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 5x = 21 + -4

Combine like terms: 4 + -4 = 0
0 + 5x = 21 + -4
5x = 21 + -4

Combine like terms: 21 + -4 = 17
5x = 17

Divide each side by '5'.
x = 3.4

Simplifying
x = 3.4

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