Question

Solve for r 4r + 8 = 7.2 + 5r

Answer 1

Answer:
`r=0.8`

Explanation:

-Solve:

`4r+8=7.2+5r`

-Subtract
`5r` from both sides:

`4r+8-5r=7.2`

Combine
`4r` and
`5r` to get
`-r`:

`-r+8=7.2`

-Subtract
`8` from
`7.2` to get
`-0.8`:

`-r=7.2-8`

`-r=-0.8`

-Multiply both sides by
`-1`:

`r=0.8`

-Result:

`r=0.8`

Answer 2

Answer: r=0.8

Explanation:

4r + 8 = 7.2 + 5r

-4r -4r

8=7.2+r

8-7.2=r

0.8=r