7.If 18, a, b, - 3 are in A. P., then a+b = ?
(1 Point)
1212
1515
...
Mathematics, 12.08.2020 07:01, emocow
7.If 18, a, b, - 3 are in A. P., then a+b = ?
(1 Point)
1212
1515
1616
1111
please give the answer as fast as you can
please
Answers: 1
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