Question

33-17+65

初一数学题.
(-30)-17-(-65)+5=?
-2/1-(-3/1)+(-4)=?
-3-0+4=?
(-2/7)-(4/9)+(2/3)=?
要过程哦..谢了...
第一题错了 是（-33）-17+65+5

Answer 1

（-33）-17+65+5
=-33-17+65+5
=20
-2/1-(-3/1)+(-4)
=-1/2+1/3-4
=-25/6
-3-0+4
=-3+4
=1
(-2/7)-(4/9)+(2/3)
=-2/7-4/9+2/3
=-4/63