Question

a=12-b , 2a-b = 3 ,a= ? b=?

Answer 1

Answer:

a=5, b=7

Step-by-step explanation:

a=12-b

2a-b=3

from substituting a,

2(12-b)-b=3

24-2b-b=3

24-3b=3

-3b=-21

b=21/3

b=7

from substituting b, we get

a=12-b

a=12-7

a=5