Question

100 points!!!!!
What is the value of x?
enter your answer in the box.
x=

Answer 1

`(9)/(72) = (3x - 20)/(56) \\ (1)/(8) \: \: \: = (3x - 20)/(56) \\ (1 * 56)/(8) + 20 \: \: = 3x \\ 7 + 20 = 3x \\ 3x = 27 \\ = > x = 9 \\ = = = = = = = =`

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Answer 2

`x = 9`

Explanation:

Step 1: Make an expression

`(9)/(3x-20) =(72)/(56)`

Step 2: Cross multiply

`(9)/(3x-20) =(72)/(56)`

`9(56) = 72(3x-20)`

Step 3: Distribute

`9(56) = 72(3x-20)`

`504 = (72 * 3x) + (72 * -20)`

`504 = 216x - 1440`

Step 4: Add 1440 to both sides

`504 + 1440 = 216x - 1440 + 1440`

`1944 = 216x`

Step 5: Divide both sides by 216

`1944 / 216 = 216x / 216`

`9 = x`

Answer:
`x = 9`