Select the correct answer.
To solve this system of equations using substitution, what could be substituted in place of x in the second equation?
2y +x=10
3x-y=-4

A.2y-11
B.11-2y
C.3x+4
D. y-4/3

Part a : solve - vp + 40 < 65 for v . part b : solve 7w - 3r = 15 for r show your work!

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

If you could answer these your a life saver