What is the answer to 4/(x+7)=2 ?

The answer to 4/(x+7)=2 is x=-5

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4/(x+7)=2

\frac{4}{x + 7} = 2

x = - 5

Solution steps

\frac{4}{x + 7} = 2

Multiply both sides by

x + 7

4 = 2 (x + 7)

Switch sides

2 (x + 7) = 4

Divide both sides by

2

x + 7 = 2

Move

7

to the right side

x = - 5

Verify Solutions

Find undefined (singularity) points:

x = - 7

Combine undefined points with solutions:

x = - 5

x, z = \frac{x y}{x - y}

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

- \frac{3}{x + 7} + 9 = - \frac{x}{x + 7}

V, d = \frac{m}{V}

\frac{7}{x - 4} = 2