Question

有的是计算，有的是解方程 70%x-40%x=1.2×36 35÷（5/6-2/3）×3 （8/10+3/5）×（2/9-2/15）

96.2×37-22.2÷37
10944÷34×25-758
132.5-18÷1.5+7.6

Answer 1

解：
70%x-—30%x=1.2x36
40%x=43.2
x=10.8
35÷（5/6－2/3）x3
=35÷(5/6-4/6)x3
=35÷1/6x3
=35x6x3
=630
（8/10+3/5）×（2/9-2/15）
=（8/10+6/10）×（10/45-6/45）
=14/10x4/45
=28/22596.2×37-22.2÷37=3559.4—0.6=3558.8

10944÷34×25-758=321.88235×25-758=8047.0588-758=7289.0588

132.5-18÷1.5+7.6=132.5-12+7.6=120.5+7.6=128.1

追问

剩下的呢

追答

96.2×37-22.2÷37=3559.4—0.6=3558.8

10944÷34×25-758=321.88235×25-758=8047.0588-758=7289.0588

132.5-18÷1.5+7.6=132.5-12+7.6=120.5+7.6=128.1

Answer 2

70%x-40%x=1.2×36
0.3x=1.2×36
x=4×36=144
35÷（5/6-2/3）×3
=35÷(5/6-4/6)×3
=35÷(1/6)*3
=35*6*3
=630
（8/10+3/5）×（2/9-2/15）
=(8/10+6/10)×(10/45-6/45)
=14/10×4/45
=28/225
96.2×37-22.2÷37
=3559.4-0.6
=3558.8
10944÷34×25-758
≈8047.06-758
=7289.06
132.5-18÷1.5+7.6
=132.5-12+7.6
=128.1

Answer 3

同解