Question

If m = 2n and n = 4 +p, which one of the following formulae is also

true?
m = 6p
m = 8+2p
m = 6+p
m = 4+2p

Answer 1

From the given equation-

4(3p+2)−5(6p−1)=2(p−8)−6(7p−4)

⇒12p+8−30p+5=2p−16−42p+24

⇒−18p+13=−40p+8

⇒−18p+40p=8−13

⇒22p=−5

⇒p=

22

−5

.

Explanation:

basicly what I said

Answer 2

The answer is m = 8 + 2p.

m = 2n

n = 4 + p

m = 2(4 + p) = 8 + 2p

Therefore, the only formula that is also true is m = 8 + 2p.

Explanation: