Answer:
1. r = 28
2. k = 45
3. s = 40
4. f = 14
5. h = 18
6. n = 5
Explanation:
1.
7/r = 1/4
1 × r = 4 × 7
r = 28
2.
15 × k = 9 × 75
15k = 675
k = 45
3.
21 × s = 24 × 35
21s = 840
s = 40
4.
17 × f = 7 × 34
17f = 238
f = 14
5.
5 × h = 15 × 6
5h = 90
h = 18
6.
14 × n = 5 × 42
14n = 210
n = 5
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