Question

If 5r + 4 = -4 – (6r – 8), then
–4r = ?

a)12
b) -2
c)-8
d) 0

Answer 1

`-4r = 0`

Explanation:

Given

`5r + 4 = -4 - (6r - 8)`

Required

Find - 4r

`5r + 4 = -4 - (6r - 8)`

Open bracket

`5r + 4 = -4 - 6r + 8`

Collect Like Terms

`6r+5r =- 4 -4 + 8`

`11r =0`

Solve for r

`r = (0)/(11)`

`r = 0`

Multiply both sides by -4

`-4r = 0*-4`

`-4r = 0`