If a + b = 7 and ab = 10, find the value of a and b.
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If a + b = 7 then our possible answers are 1 + 6, 2 + 5, or 3 + 4.

Now that we have the possible answers, we can times a and b to find 10.

1 • 6 = 6, 2 • 5 = 10, and 3 • 4 = 12.

So our answer is 2 + 5 = 7

2 and 5 being a and b.