Hi.

So we have an equation like this

3/7 (p + 4) = -6

First, we are going to use the reciprocal of 3/7 to get rid of that exponent,

Multiply both sides by 7/3

(7/3)(3/7)(p+4)=-6(7/3)

which yields

p+4=-2(7)=-14

Finally add -4 to both sides

p+4-4=-14-4

p=-18