Answer:
s = 
t = 
Step-by-step explanation:
(Hope this helps can I pls have brainlist (crown)☺️)
1.4 because if you do your math it gives you a sum of 1.4
You can solve a system of three equations by multiplying each equation by a number that allows you to add or suvtract the same equation together by eliminating the x or y variable
Your answer will be D and E