Question

solve the simultaneous equations : a-3b = 3a -1 =2a -b​

Answer 1

a-3b=3a-1=2a-b

a-3b=3a-1

1-3b=2a

a=(1-3b)/2

3a-1=2a-b

a=1-b

1-3b/2=1-b

1-3b=2-2b

1-2=3b-2b

b=-1

a=1-3(-1)/2

a=4/2

a=2

Please mark it as a brainliest answer