Given that R = 6 x + 5 y Find y when x = 7 and R = 18 Give your answer as an improper fraction in its simplest form.

asked Apr 3, 2022 45.5k views

4 votes

Given that

R
=
6
x
+
5
y

Find
y
when
x
=
7
and
R
=
18

Give your answer as an improper fraction in its simplest form.

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5 votes

R = 6x + 5y

x = 7, R = 18

Substitute them in: 18 = 6(7) + 5y
18 = 42 + 5y
-24 = 5y
y = -24/5

It’s already in its simplest form

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