Question

solve
a-2b=2
a+b=2(b+3)

Answer 1

@BVB4rmy

Answer 2

a-2b=2 ----(1)
a+b=2(b+3) ----(2)
from (1)
a = 2 + 2b
put in (2)
a+b=2(b+3)
2+2b+b=2(b+3)
2+3b =2b+6
3b-2b =6-2
b = 4
put in (1)
a-2b=2
a-2(4)=2
a-8=2
a=2+8
a=10

S.S= {a,b}={10,4}