Question

Solve the equation for the given variable. justify each step.

9x + 2y = 5; y

1/15s - 2/3t = -2; s

Answer 1

Answer: y=
`(5-9x)/(2)`

s=-30+10t

Explanation:

9x + 2y = 5; y

9x-9x+2y = 5-9x

2y=5-9x

y=
`(5-9x)/(2)`

1/15s - 2/3t = -2; s

(1/15s - 2/3t = -2)*15 ==> Get rid of fraction by multiplying both sides by 15

s - 30/3 t=-30

s-10t=-30

s=-30+10t