100=30-5r

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Solution for 100=30-5r equation:


Simplifying
100 = 30 + -5r

Solving
100 = 30 + -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 = 30 + -5r + 5r

Combine like terms: -5r + 5r = 0
100 + 5r = 30 + 0
100 + 5r = 30

Add '-100' to each side of the equation.
100 + -100 + 5r = 30 + -100

Combine like terms: 100 + -100 = 0
0 + 5r = 30 + -100
5r = 30 + -100

Combine like terms: 30 + -100 = -70
5r = -70

Divide each side by '5'.
r = -14

Simplifying
r = -14

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