If 2x + y = 8 and x-y = 1 then y = ?
(a) 3 (b) 5 (c)2 (d) No solution for y
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Answer:
2
Step-by-step explanation:
x-y=1
x=1+y
puting the value of x in 2x+y=8
2(1+y)+y=8
2+2y+y=8
3y=8-2
3y=6
y=6/3
y=2
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