Question

Find \[a\] and \[b\] if \[2a+b=4\] and \[a-2b=-3\].

Options

• \[a=2,\ b=1\]

• \[a=4,\ b=3\]

• \[a=1,\ b=2\]

• \[a=3,\ b=4\]

Answer 1

Using \[a-2b=-3\] and \[2a+b=4\], the simultaneous equations give \[b=2\]. Substituting gives \[a=1\].