16-10-2021
Mathematics

contestada

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.

Respuesta :

breadsticksandcheese breadsticksandcheese

16-10-2021

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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