Question

a-b = 1 2a+5b=16 por favor ajudaaaaaaaaaaaaaaaa

Answer 1

a-b=1      2a+5b=16
a=1+b

2(1+b)+5b=16
2+2b+5b=16
7b=16-2
7b=14
b=14/7
b=2
a=1+b  >>> a=1+2 >> a=3