5(r-1)=20

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Solution for 5(r-1)=20 equation:


Simplifying
5(r + -1) = 20

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

Solving
-5 + 5r = 20

Solving for variable 'r'.

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

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

Combine like terms: -5 + 5 = 0
0 + 5r = 20 + 5
5r = 20 + 5

Combine like terms: 20 + 5 = 25
5r = 25

Divide each side by '5'.
r = 5

Simplifying
r = 5

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