What is the answer to r/(r+1)=0.875 ?

The answer to r/(r+1)=0.875 is r=7

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r/(r+1)=0.875

\frac{r}{r + 1} = 0.875

r = 7

Solution steps

\frac{r}{r + 1} = 0.875

Multiply both sides by

r + 1

r = 0.875 (r + 1)

Multiply both sides by

1000

r \cdot 1000 = 875 (r + 1)

Expand

875 (r + 1) : 875 r + 875

r \cdot 1000 = 875 r + 875

Move

875 r

to the left side

125 r = 875

Divide both sides by

125

r = 7

Verify Solutions

Find undefined (singularity) points:

r = - 1

Combine undefined points with solutions:

r = 7

\frac{2 x + 1}{x + 3} = 5

\frac{( x + 1 )}{x} = 2.5

\frac{7}{2} = \frac{6}{y} - 4

0.38 = \frac{0.1}{R}

2 = \frac{2}{3} - \frac{7}{x}