What is the answer to (40)/(d-30)=(50)/(d-20) ?

The answer to (40)/(d-30)=(50)/(d-20) is d=70

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(40)/(d-30)=(50)/(d-20)

\frac{40}{d - 30} = \frac{50}{d - 20}

d = 70

Solution steps

\frac{40}{d - 30} = \frac{50}{d - 20}

Cross multiply

40 d - 800 = 50 d - 1500

Move

800

to the right side

40 d = 50 d - 700

Move

50 d

to the left side

- 10 d = - 700

Divide both sides by

- 10

d = 70

Verify Solutions

Find undefined (singularity) points:

d = 30, d = 20

Combine undefined points with solutions:

d = 70

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2.4 = 1 + \frac{0.08 \cdot g}{1.1 - g}

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

\frac{y}{3} = \frac{y + 8}{y + 5}

\frac{2}{2 x - 7} = \frac{2}{4 x + 1}

What is the answer to (40)/(d-30)=(50)/(d-20) ?
The answer to (40)/(d-30)=(50)/(d-20) is d=70
Solve for d: (40)/(d-30)=(50)/(d-20)
The solution is d=70