Question

verify that (x+y)+z=c+(y+z) by taking. x=2/3,y=3/4,z=4/5​

Answer 1

Answer:

x = 4/5, y = -2/3 and z = (-4). Using, (x + y) × z = x × z + y × z. ⇒ [4/5 + (-2/3)] × (-4) = 4/5 × (-4) + (-2/3) × (-4). ⇒ ( (4 × 3)/(5 × 3) – (2 × 5)/(3 × 5) ) × (-4) = (-16/5) ...

Step-by-step explanation:

hope it helped u

Answer 2

Step-by-step explanation:

Since, (x+y)+z=x+(y+z)

Thereore,

LHS                                           RHS                        (LCM of 3 and 4 is 12)

(2/3 +3/4)+4/5                          2/3+ (3/4+4/5)

(2*4/3*4 + 3*3/4*3)+4/5           2/3+(3*5/4*5 + 4*4/5*4) (LCM of 4 and 5 is 20)

(8/12 + 9/12) + 4/5                    2/3+(15/20+16/20)

17/12 + 4/5                                2/3+ 31/20                    (LCM of 12 and 5 is 60)

17*5/12*5 + 4*12/5*12               2*20/3*20 + 31*3/20*3(LCM of 20 and 3 is 60)

85/60 + 48/60                         40/60 + 93/60            

133/60                                      133/60

Since LHS=RHS

Therefore verified