Question

1.a.) If (x+y, x-y) =(20,16)findx and y.
1.b.)If (x+a, y-c) =(2a,1+c),find x and y. ​

Answer 1

Answer:

1.a)x= 18

y=2

Step-by-step explanation:

x+y= 20

18+2=20

x-y=16

18-2=16

hope it may help

Answer 2

(a). if (x+y,x-y)=(20,16)

then x+y=20__(1)

and x-y=16__(2)

from equation (1) and (2)

x+y=20

x-y=16

______

2x=36

______

x=36/2=18

hence,x=18

and from equation (1)

x+y=20

18+y=20

y=20-18=2

hence,y=2

(b). if (x+a,y-c)=(2a,1+c)

then,x+a=2a

x=2a-a

x=a

hence,x=a

and y-c=1+c

y=1+c+c

y=1+2c

hence,y=1+2c