Question

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Answer 1

ax + x = a^2 + ab - 1 - ab

ax + x = a^2 - 1

x + x + 1 = (a^2)/a

x + x + 1 = a

2x + 1 = a

x = (a/2) -1

Answer 2

Explicación paso a paso:

$ax + x = a(a + b) - (1 + ab) \\ x(a + 1) = a {}^{2} + ab - 1 - ab \\ x(a + 1) = a {}^{2} - 1 \\ x = \frac{a {}^{2} - 1 }{a + 1}$