Question

যদি x+y=৪, x-y =3হয় তবে x+2y =?​

Answer 1

Answer:

x+y=8

x-y=3

gives

2x=5

x=5/2

then ,

x+2y=5/2+2y

=5+4y/2

5+4y=2

4y=-3

y=-3/4