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Answer:
7 1/2
Step-by-step explanation:
2 1/2 times 3 is 7 1/2
ummmmmmmmmm ok cool
x - y = 3
x = 3 + y
x -3 = y
y = x-3
put it in 1st equation
2x +y = 15
2x + x - 3 = 15
3x - 3 = 15
3x = 15+3 = 18
x = 18/3 = 6
x = 6
C.
pretty positive! :) hope it helps you
