16-47 28-(-74)
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16-47 28-(-74)
(3.8)-(+7) (-5.9)—(6.1)
(+2/5)-(-3/5) (-2/5)—(-3/5)
1/2-1/3 (-1/2)-1/3
-4.2+5.7-8.4+10 -1/4+5/6+2/3+1/2
12-(-18)+(-7)-15 4.7-(8.9)-7.5+(-6)
数学有理数加减法 过程和答案都要有. 急
(3.8)-(+7) (-5.9)—(6.1)
(+2/5)-(-3/5) (-2/5)—(-3/5)
1/2-1/3 (-1/2)-1/3
-4.2+5.7-8.4+10 -1/4+5/6+2/3+1/2
12-(-18)+(-7)-15 4.7-(8.9)-7.5+(-6)
数学有理数加减法 过程和答案都要有. 急
16-47=-(47-16)=-31 28-(-74)=28+72+2=100+2=102
(3.8)-(+7)=-(7-3.8)=-3.2 (-5.9)—(6.1)=-(5.9+6.1)=-12
(+2/5)-(-3/5)=2/5+3/5=5/5=1 (-2/5)—(-3/5)=3/5-2/5=1/5
1/2-1/3=3/6-2/6=1/6 (-1/2)-1/3=-(3/+2/6)=-5/6
-4.2+5.7-8.4+10=-(4.2+8.4)+15.7=15.7-12.6=3.1
-1/4+5/6+2/3+1/2=-1/4+5/6+4/6+3/6=-1/4+12/6=2-1/4=8/4-1/4=7/4
12-(-18)+(-7)-15=12+18-(7+15)=30-22=8
4.7-(8.9)-7.5+(-6)=4.7-(8.9+7.5+6)=4.7-(15.4+6)=-(21.4-4.7)=-16.7
(3.8)-(+7)=-(7-3.8)=-3.2 (-5.9)—(6.1)=-(5.9+6.1)=-12
(+2/5)-(-3/5)=2/5+3/5=5/5=1 (-2/5)—(-3/5)=3/5-2/5=1/5
1/2-1/3=3/6-2/6=1/6 (-1/2)-1/3=-(3/+2/6)=-5/6
-4.2+5.7-8.4+10=-(4.2+8.4)+15.7=15.7-12.6=3.1
-1/4+5/6+2/3+1/2=-1/4+5/6+4/6+3/6=-1/4+12/6=2-1/4=8/4-1/4=7/4
12-(-18)+(-7)-15=12+18-(7+15)=30-22=8
4.7-(8.9)-7.5+(-6)=4.7-(8.9+7.5+6)=4.7-(15.4+6)=-(21.4-4.7)=-16.7
请计算下列各题(-8)-8 (8)-(-8) 8-(-8) 8-8 0-6 0-(-6) 16-47 28-(-74)
有理数0-(-6) 16-47 28-(-74) (-3.8)-(+7) (-5.9)-(-6.1) 过程详细
16()()96 ( ) 47 16 ( )( )
负八减八等于16吗?(-8)-8=?、(—8)-(—8)=?、28-(-74)=?、(-3.8)-(+7)=?、(-5.
0-(-6)=28-(-74)=
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