Show:
add
substitute
mutuality
divide
number bond
100

10 + 3

13

100

30-20

10

100

10x450

4500

100

15%30

15


100

15\12 

3\12

200

50+50

100


200

10-3

7

200

10x250

2500

200

15%3

5

200

18\10

8\10

300

10+10

20


300

5-3

2

300

30x40

1200

300

20%2

10

300

10\7

3\10

400

20+20

40


400

125- 25

100

400

120x4

180

400

50%3

25

400

10\8

2\10

500

100+500

600

500

3,000-2,500

500

500

170x3

221

500

300%50

6

500

12\10

2\10