Solve for r -4=r/20-5

Problem

−4=r/20−5

Solution

1. Isolate the term containing r by adding 5 to both sides of the equation.

−4+5=r/20−5+5

1=r/20

2. Solve for r by multiplying both sides of the equation by 20

20⋅1=20⋅r/20

20=r

3. Rearrange the equation to place the variable on the left side.

r=20

Final Answer

−4=r/20−5⇒r=20

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