初1数学 计算题(1) -11+2-(-3)*11 (2)48/[(-8) -(-4)] (3) (-1)*(-5)/[(-9)+2*(-5)]

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初1数学 计算题(1) -11+2-(-3)*11 (2)48/[(-8) -(-4)] (3) (-1)*(-5)/[(-9)+2*(-5)]
初1数学 计算题
(1) -11+2-(-3)*11 (2)48/[(-8) -(-4)] (3) (-1)*(-5)/[(-9)+2*(-5)]

初1数学 计算题(1) -11+2-(-3)*11 (2)48/[(-8) -(-4)] (3) (-1)*(-5)/[(-9)+2*(-5)]
(1) -11+2-(-3)*11=-11+2+3*11
=-11+2+33
=26
(2) 48/[(-8) -(-4)]=48/(-8+4)
=48/(-4)
=-12
(3) (-1)*(-5)/[(-9)+2*(-5)]=5/(-9-10)
=5/-19
=-5/19

-66 -12 负五分之十九

(1) -11+2-(-3)*11=-9-(-33)=-9+33=24
(2) 48/[(-8)-(-4)]=48/[-8+4]=48/(-4)=-12
(3) (-1)*(-5)/[(-9)+2*(-5)]=5/[-9+(-10)]=5/(-19)=-5/19