T=(pq/r)-rq make q subject of formula

i have to make y the subject of this equation: 4t + 7y - 9 = 0 wod it be y = 4t + 9/7 ??...

How would I make v the subject of the following equation? 5v=3(v+r)

make F the subject: e=3-f/1+2f

1. make p the subject: p/p-3= R 2. make R the subject a= 1- 1/R

u=v+2t make t the subject of the formula

Make r the subject s=p(1+r)n

S=2πr (h+r) make h subject of the formalar

Make Make the subject of formula in want 2√x=a

Asked by muhammed Darboe