Question

Equivalent form of this equation x/12 -7=x/4

options
1. x-7=3x
2. x-74=12x
3. x-84=3x

Answer 1

Option 3.
`x-84=3x`

Explanation:

we have

`(x)/(12)-7=(x)/(4)`

simplify

Multiply by
`12` both sides

`12((x)/(12)-7)=12((x)/(4))`

`x-7*12=3x\\ \\x-84=3x`

`3x-x=-84\\ 2x=-84\\ x=-42`

therefore

the answer is the option 3

Answer 2

The correct answer is 3. x-84=3x

That's because
X/12 - 7 = x/4 is also (x-84)/7 = x/4 and when you cross multiply it you get (x-84)*4 = x * 7
4x-336=7x
-3x = 336
x = 336/-3
x = -112