Question

I need help with the question I post as a photo.

Answer 1

We will have the following:

*First:

`3x+(1)/(4)-x+1(1)/(2)=2x+(1)/(4)+(3)/(2)`
`=2x+(7)/(4)=2x+1(3)/(4)`

So, the first one is not equivalent to the other expression.

*Second:

`2(3x+1)=6x+2`

So, the second one is equivalent to the other expression.

*Third:

`3(x+1)-(1+x)=3x+3-1-x`
`=2x+2`

So, the third one is not equivalent to the other expression.

*Fourth:

`4(x+1)-x-4=4x+4-x-4`
`=3x`

So, the fourth one is equivalente to the other expression.

*Fifth:

`5.5+2.1x+3.8x-4.1=5.9x+1.4`

So, the fifth one is equivalent to the other expression.