Verify that

a + (b + c) ≠ (a + b) + (a ÷ c)

for each of the following values of a, b and c.

**(a)** a = 12, b = – 4, c = 2

**(b)** a = (- 10), b = 1, c = l.

a + (b + c) ≠ (a + b) + (a ÷ c)

for each of the following values of a, b and c.

**(a)** a = 12, b = – 4, c = 2

**(b)** a = (- 10), b = 1, c = l.