Answer:
i dont know have a good day pls stay safe dont get hurt and get a good grade
Step-by-step explanation:
Equation (1)

Equation (2)

Get y alone in equation (1)

Insert y in equation (2)

Answer:
- 1/2
Step-by-step explanation:
turn 2/5 to have the same denominator as 10
2 ( 2 ) = 4
5 ( 2 ) = 10
4/10 - 9/10
= -5/10
simplify
-5/10 = -1/2
hope this helps
answer below,
<h2>Hope this helps :></h2><h2 /><h2>From Cambridge</h2><h2 /><h2>please give brainliest!</h2>