Question

Q.5. Verify that a + (b + c) = (a + b) + c by taking a = - 4/5; b = 7/8 and c = 3/4

Answer 1

Step-by-step explanation:

$a + (b + c) = (a + b) + c \\ \frac{ - 4}{5} + ( \frac{7}{8} + \frac{3}{4} ) = (\frac{ - 4}{5} + \frac{7}{8} ) + \frac{3}{4} \\ \frac{ - 4}{5} + ( \frac{7 + 6}{8} ) = ( \frac{ - 32 + 35}{40} ) + \frac{3}{4} \\ \frac{ - 4}{5} + \frac{13}{8} = \frac{67}{40} + \frac{3}{4}$

now do rest of the question