Question

Pls, ajutor, dau coroana​

Answer 1

2.

2x+y=10

x-y=2 => y=x-2

2x+x-2=10

3x=12

x=4 => y=4-2=2

sol x=4

y=2

3.

a+b=48

a=4b+3

=> 4b+3+b=48

5b=45

b=9 => a=48-9=39

sol a=39

b=9