Question

2X+3Y=40, 2X+5Y=60.FIND X AND Y. *

Answer 1

Answer:

2X + 3Y - 40 = 0

2X + 5Y - 60 = 0

(-) (-) (+)

_______________

-2Y + 20 = 0

-2Y = -20

Y = -20/-2

Y = 10

NOW 2X + 3Y = 60

2X = 60-3Y

X = (60-3Y) /2

X = (60-3*10)/2

X = (60-30)/2

X = 30/2

X = 15