Question

3|-8x| + 8 = 80What is x?

Answer 1

Given the following expression:

`3|-8x|+8=80`

The symbol | | represents the absolute value.

The absolute value of a number is always positive.

Therefore, the absolute value of -8x is 8x.

We get,

`3|-8x|+8=80`
`3(8x)+8=80`
`24x+8-8=80\text{ - 8}`
`24x\text{ = 72}`
`(24x)/(24)\text{ = }\frac{\text{72}}{24}`
`\text{ x = }3`

Therefore, x = 3.