已知a是8的相反数,b小于0,且b的绝对值比a大10,求a加b的值求大神帮助_数学解答

已知a是8的相反数,b小于0,且b的绝对值比a大10,求a加b的值求大神帮助

人气：155 ℃　时间：2020-08-28 13:01:52

解答

a = -8 |b| = -b |b| - a = -b - (-8) = 10 ==> b = -2 a +b =(-8) +(-2) = -10