7 Find the value of a: (i)3/5 = a/20 (ii) a+ 5/21 - 12/21
Answers
Answered by
6
Answer:
1. 12
2. 7
hope it will help you
Answered by
0
Answer:
1/3
Step-by-step explanation:
3/5=a/20
a=3×20/5
a=3×4
a=12
a+5/21-12/21
a+5/21-12/21=0
a=12/21-5/21
a=7/21
a=1/3
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