1. 7/10 = n/20
2. 18/24 = 9/n
3. n/5 = 30/50
4. 3n + 4n = 28
5. 2n + 3n + 4n = 81
Ano po ang sagot?
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1. 7/10 = n/20
2. 18/24 = 9/n
3. n/5 = 30/50
4. 3n + 4n = 28
5. 2n + 3n + 4n = 81
Ano po ang sagot?
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Step-by-step explanation:
1) 7/10 =n/20
10n = 140
10n/10 = 140/10
n = 14
2) 18/24 = 9/n
18n = 216
18n/18 = 216/18
n = 12
3) n/5 =30/50
50n = 150
50n/50 = 150/50
n = 3
4) 3n + 4n = 28
7n = 28
7n/7 = 28/7
n = 4
5) 2n + 3n + 4n = 81
9n = 81
9n/9 = 81/9
n = 9