Solve this equation for r: 4r/v -7=10y+8

Hello from MrBillDoesMath!

r = (v/4) (15+10y) = (5/4)v(3 + 2y)

Discussion:

To solve for "r" multiply the equation

4r/v -7=10y+8

by ( v/4).

(v/4) * ( ( 4r/v) - 7 ) = (v/4) ( 10y + 8)  =>

(v/4) (4/v) * r  -  7 (v/4) = (v/4) * ( 10y + 8)  =>

r - 7 (v/4) = (v/4)(10y+8) =>           (Add 7(v/4) to both sides)

r =  7 (v/4) + (v/4) ( 10y + 8)  =>

r = (v/4) ( 7 + 10y + 8 ) =>

r = (v/4) (15+10y)

Regards,  

MrB