100=2(r+5)

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Solution for 100=2(r+5) equation:


Simplifying
100 = 2(r + 5)

Reorder the terms:
100 = 2(5 + r)
100 = (5 * 2 + r * 2)
100 = (10 + 2r)

Solving
100 = 10 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
100 + -2r = 10 + 2r + -2r

Combine like terms: 2r + -2r = 0
100 + -2r = 10 + 0
100 + -2r = 10

Add '-100' to each side of the equation.
100 + -100 + -2r = 10 + -100

Combine like terms: 100 + -100 = 0
0 + -2r = 10 + -100
-2r = 10 + -100

Combine like terms: 10 + -100 = -90
-2r = -90

Divide each side by '-2'.
r = 45

Simplifying
r = 45

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