Question

Given that R=7x+5Y find Y when X=9 and R=35 give your answer as an improper fraction in its simplest form

Please help

Answer 1

Y = -
`(28)/(5)`

Explanation:

Given

R = 7X + 5Y ← substitute X = 9, R = 35

35 = 7(9) + 5Y

35 = 63 + 5Y ( subtract 63 from both sides )

- 28 = 5Y ( divide both sides by 5 )

-
`(28)/(5)` = Y

Answer 2

y = -28/5

Explanation:

R = 7x +5y

35 = 7(9) + 5y

35 = 63 +5y

-5y= 63- 35

-5y/-5 = 28/-5

Y = -28/5