(-3/4)乘(-8加2/3减4/3)
=-3/4×(-8-2/3)
=-3/4×(-26/3)
=6.5
(-1.2)乘(-5/8)加(-24)乘1/12
=0.45-2
=-1.55
(1/20 减3/4)乘 [5/7 加 (-5/14)]
=-7/20×5/14
=-1/8
-22/7乘(22/7 减4/3)乘 7/22 除(-22/21)
=-22/7×7/22×38/21÷(-22/21)
=-38/21×(-21/22)
=19/11
(-3/4)乘(-8加2/3减4/3)
=-3/4×(-8-2/3)
=-3/4×(-26/3)
=6.5
(-1.2)乘(-5/8)加(-24)乘1/12
=0.45-2
=-1.55
(1/20 减3/4)乘 [5/7 加 (-5/14)]
=-7/20×5/14
=-1/8
-22/7乘(22/7 减4/3)乘 7/22 除(-22/21)
=-22/7×7/22×38/21÷(-22/21)
=-38/21×(-21/22)
=19/11