What is the answer to (15)/(x+2)=7 ?

The answer to (15)/(x+2)=7 is x= 1/7

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(15)/(x+2)=7

\frac{15}{x + 2} = 7

x = \frac{1}{7}

Decimal Notation

x = 0.14285 \dots

Solution steps

\frac{15}{x + 2} = 7

Multiply both sides by

x + 2

15 = 7 (x + 2)

Switch sides

7 (x + 2) = 15

Divide both sides by

7

x + 2 = \frac{15}{7}

Move

2

to the right side

x = \frac{1}{7}

Verify Solutions

Find undefined (singularity) points:

x = - 2

Combine undefined points with solutions:

x = \frac{1}{7}

x + \frac{1}{x} = 6

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

0.8 = \frac{0.2}{x}

\frac{7.6 y + 9}{y + 2} = 7.8

4 = - \frac{2}{x}