Question

х 10. Find the value of x-2y + - +1. If x = 2 and y=-1. (a) 2 (b) 3 (c) 1 (d) 5
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Answer 1

Step-by-step explanation:

x-2y+1

value of x=2 y= -1

2-2×-1+1

=1

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Answer 2

Answer:

Step-by-step explanation:

x-2=y-1

Or,x-y=1

2y+1=x+2

Or,x-2y=-1

Subtracting 1 from 2 we get

-y=-2

Therefore y=2

Now,putting this value of y in (1) we get

x-2=1

Therefore x=3