mathematical equation for a or simplify the problem as far as possible?
2/5+1/3a=1/5
a -15
b -3/5
c -9a^9+12a
d 7a+12
回答 (3)
2/5 + 1/3a = 1/5
6 + 5a = 3
5a = -3
a = -3/5
Answer choice:
b -3/5
Assuming that should be shown as :-
2/5 + (1/3) a = 1/5
6 + 5a = 3
5a = - 3
a = -3/5
Presuming that is:
(2/5) + (1/3)a = 1/5
Then start with subtracting 2/5 from both sides:
(1/3)a = -1/5
Now multiply both sides by 3:
a = -3/5 (answer B)
收錄日期: 2021-04-21 17:00:14
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