Given the equations below, what is the value of ab?

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Accepted Answer

Solve the second equation for b in terms of a; b – a = 1, b = a + 1. Substitute this expression for b in the first equation and solve for a: 10(a + 1) – 9a = 6 10a + 10 – 9a = 6 a + 10 = 6 a = –4 Substitute the value of a into the second equation and solve for b: b – (–4) = 1 b + 4 = 1 b = –3 Since a = –4 and b = –3, the value of ab = (–4)(–3) = 12.

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