Question

5. Solve : x + y = 18; y+z= 12:z+x= 16​

Answer 1

Answer:

x+y=18

y=18-x

y+z=12

18-x+z=12

z=x-6

z+x=16

x-6+x=16

2x=22

x=11

y=18-11=7

z=11-6=5