Question

1. If x + y = 10 and x - y = 12, find
the value of x and y.​

Answer 1

$x + y = 10 \\ x - y = 12 \\ adding \: eqns2x = 22 \\ x = \frac{22}{2} \\ x = 11 \\ 11 + y = 10 \\ y = - 1$

Answer 2

Answer:

x=11

y= -1

Step-by-step explanation:

x+y=10

therefore,

x=10-y ---eq 1

since,

x-y=12 ---eq 2

putting value of eq 1 in eq 2

10-y-y=12

10-2y=12

10-12=2y

-2=2y

y= -2/2

y= -1

putting value of y in eq 1

x=10-y

x=10-(-1)

x=10+1

x=11