What is the answer to 6/(b+9)= 4/(b+5) ?

The answer to 6/(b+9)= 4/(b+5) is b=3

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6/(b+9)= 4/(b+5)

\frac{6}{b + 9} = \frac{4}{b + 5}

b = 3

Solution steps

\frac{6}{b + 9} = \frac{4}{b + 5}

Cross multiply

6 b + 30 = 4 b + 36

Move

30

to the right side

6 b = 4 b + 6

Move

4 b

to the left side

2 b = 6

Divide both sides by

2

b = 3

Verify Solutions

Find undefined (singularity) points:

b = - 9, b = - 5

Combine undefined points with solutions:

b = 3

t, p = \frac{fd}{t}

\frac{π}{4} = \frac{2 π}{x}

\frac{14 t}{t ^{2} + 10} = 2

\frac{3}{4} = \frac{4}{x - 1}

u, B = \frac{d}{1 - u}