Question

若a是整数,且ab=12,|a|＜|b|,则a+b=()

Answer 1

a=1,b=12 a+b=13

a=-1,b=-12,a+b=-13

a=2,b=6,a+b=8

a=-2,b=-6,a+b=-8

a=3,b=4,a+b=7

a=-3,b=-4,a+b=-7