Question

Mia says that when you rearrange 3a - p = m to make a the subject of the formula you get:

a = m - p / 3
Mia is wrong. Explain and show her how to do the
question correctly.​

Answer 1

see explanation

Explanation:

Mia is wrong in that she has subtracted p from both sides instead of adding p to both sides.

Given

3a - p = m ( add p to both sides )

3a = m + p ( isolate a by dividing both sides by 3 )

a =
`(m+p)/(3)`

Answer 2

`a =(m+p)/(3)`

Explanation:

`3a - p = m`

→ First plus p to both sides to isolate 3a

`3a = m+p`

→ Divide both sides by 3 to isolate a

`a =(m+p)/(3)`