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If a+b = 11 and a−b = 7, then ab

If a+b = 11 and a−b = 7, then ab
asked 4.9k views
5 votes
If a+b = 11 and a−b = 7, then ab

asked
User Krishna Nigalye
by
7.9k points

1 Answer

4 votes

Answer is..

ab= 18

Explanation..

a + b = 11...---> a= 11-b

a -b = 7

11 - b - b = 7

11 - 2b = 7

2b = 18

b = 9

and a = 11 - 7

a = 2

So

ab = 2 * 9 =18

answered
User Nico Adams
by
8.2k points
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