100=5(r+15)

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Solution for 100=5(r+15) equation:


Simplifying
100 = 5(r + 15)

Reorder the terms:
100 = 5(15 + r)
100 = (15 * 5 + r * 5)
100 = (75 + 5r)

Solving
100 = 75 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
100 + -5r = 75 + 5r + -5r

Combine like terms: 5r + -5r = 0
100 + -5r = 75 + 0
100 + -5r = 75

Add '-100' to each side of the equation.
100 + -100 + -5r = 75 + -100

Combine like terms: 100 + -100 = 0
0 + -5r = 75 + -100
-5r = 75 + -100

Combine like terms: 75 + -100 = -25
-5r = -25

Divide each side by '-5'.
r = 5

Simplifying
r = 5

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