79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的

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79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的
79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,
算式要清楚的

79×8/5+7.21×160% 35-15%X=15 23-8/9÷5/6×15/16 2/5X-120×40%=12 急,算式要清楚的
79×8/5+7.21×160%
=126.4+11.536
=137.936
35-15%X=15
0.15X=20
X=400/3
23-8/9÷5/6×15/16
=23-(8/9)×(6/5)×(15/16)
=23-1
=22
2/5X-120×40%=12
2/5X=12+48
2/5X=60
5X=1/30
X=1/150