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Mathematics, 13.12.2019 01:31 faithtunison

Solve for x: 3 over quantity x minus 4 equals 7 over x 7 1 −1 −7

Answers

ansver
Answer from: kaileyy06

x=7

Step-by-step explanation:

\frac{3}{x-4}=\frac{7}{x}

Solve for x

Multiply in cross

3(x)=7(x-4)

distributive property right side

3x=7x-28

subtract 3x both sides

3x-3x=7x-28-3x

0=4x-28

Adds 28 both sides

0+28=4x-28+28

28=4x

Divide by 4 both sides and rewrite

x=7

ansver
Answer from: Quest
31/6= 19/6 19/6 *1/7=19/42
ansver
Answer from: Quest

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours

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Solve for x: 3 over quantity x minus 4 equals 7 over x 7 1 −1 −7...

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