Question

X+y=7
Solve X-y=1
X-y=1

Answer 1

X+y =7(eq1).

x-y=1 (eq.2)

value of X

x-y=1

x=1+y

put value of x in eq1

x+y=7

1+y+y=7

1+2y=7

2y=7-1

2y=6

y=6/2

y=3

put value of y in eq2

x-y=1

x-3=1

x=1+3

x=4

hence, x=4;y=3