Fraction question

Question

R=7x+5y

Where R is 35 and x is 9. Find the valie of y, giving the answer in a fraction in its simplest form

Answer 1

R = 7x + 5y

For R = 35 and x = 9, the equation becomes:

35 = 7·9 + 5y

35 = 56 + 5y

Solve for y.