1) simplify the ratio 15: 9: 6
2) simplify the ratio 16: 20
3) simplify the ratio 36: 30
4) simplify the ratio 12: 30: 24
5) simplify the ratio 12: 30
6) simplify the ratio 56: 40
7) simplify the ratio 12: 4: 8
8) simplify the ratio 7.0: 4.2
9) simplify the ratio 3: 4.5
10) simplify the ratio 1.2: 3: 2.4

1. 5:3:2

2. 4:5

3. 6:5

4. 2:5:6

5. 2:5

6. 7:5

7. 3:1:2

8. 1.0:0.6

9. 1:1.5

10. 0.2:0.5:0.8

Step-by-step explanation:

1. divide everything by 3

2. divide everything by 4

3. divide everything by 6

4. divide everything by 6

5. divide everything by 6

6. divide everything by 8

7. divide everything by 4

8. divide everything by 7

9. divide everything by 3

10. divide everything by 6

-1/2 +2

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -