7+3+ 10 = 20 (yuan)
Second,
12÷2-3.5=2.5
Third,
Half a glass of water and half a glass of water make a glass of water.
Fourth,
(16+4) ÷ (8-6) = 10 (article)
6× 10+ 16 = 76 (person)
Five,
The least common multiple of 3, 5 and 7 is 3× 5× 7 = 105.
3-2= 1,5-4= 1,7-6= 1
105- 1 = 104 (piece)
For more details, chat online.