Question

Q VIII Verify that x + y = y + x if x =−7/8 y =−4/15[ Hint : LHS = RHS = −59/90]

Answer 1

Answer:

L.H.S R.H.S

x + y y + x

= -7/8 + - 4 / 15 = -4/15 + -7/ 8

= -7×15 - 4 × 8 / 120 = - 4×8 - 7× 15 / 120

= - 105 - 32 / 120 = - 32 - 105 / 120

= - 137 / 120 = - 137 / 120

L.H.S = R.H.S

Hence verified.