What is the answer to 3/(-b+4)= 9/3 ?

The answer to 3/(-b+4)= 9/3 is b=3

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3/(-b+4)= 9/3

\frac{3}{- b + 4} = \frac{9}{3}

b = 3

Solution steps

\frac{3}{- b + 4} = \frac{9}{3}

Cross multiply

9 = (- b + 4) \cdot 9

Switch sides

(- b + 4) \cdot 9 = 9

Divide both sides by

9

- b + 4 = 1

Move

4

to the right side

- b = - 3

Divide both sides by

- 1

b = 3

Verify Solutions

Find undefined (singularity) points:

b = 4

Combine undefined points with solutions:

b = 3

\frac{7 - x}{7 + x} = e^{1}

\frac{2}{x} = 2 (\frac{3}{11})

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

3 x^{2} - \frac{3}{x ^{2}} = 0

\frac{2.5}{4.5} = \frac{10}{x}