有理数计算(要过程)(1)33.1-(22.9)+(10.5)(2)(-8)-(-15)+(-9)-(-12)(3)-2/3+(-1/6)-(-1/4)-1/2(4)3/5-3/2+(-11/4)+13/4

有理数计算(要过程)(1)33.1-(22.9)+(10.5)(2)(-8)-(-15)+(-9)-(-12)(3)-2/3+(-1/6)-(-1/4)-1/2(4)3/5-3/2+(-11/4)+13/4
有理数计算(要过程)
(1)33.1-(22.9)+(10.5)
(2)(-8)-(-15)+(-9)-(-12)
(3)-2/3+(-1/6)-(-1/4)-1/2
(4)3/5-3/2+(-11/4)+13/4

有理数计算(要过程)(1)33.1-(22.9)+(10.5)(2)(-8)-(-15)+(-9)-(-12)(3)-2/3+(-1/6)-(-1/4)-1/2(4)3/5-3/2+(-11/4)+13/4
1.原式=10.2+10.5=20.7
2.原式=7+（-9）+12=-2+12=10