Question

pls answer both the question as first as possible
where a=2/3 , b=4/5 and c=(-5/6)​

Answer 1

Answer:

( 1 ) a+(b+c) = (a+b)+c

a+(b+c) = 2/3 + ( 4/5 + (-5/6))

= 2/3 + ( -1 / 30 )

= 19/ 30

( a+b ) +c = ( 2/3 + 4/5 ) + (-5/6)

= ( 22 / 15) - 5/6

= 19 / 30

( 2 )

a(bc) = (ab) c

2/3 ( 4/5 × -5/6 ) = ( 2/3 × 4/5 ) × -5/6

LHS = 2/3 × -20/30

= - 40 / 90

RHS = 8/15 × -5/6

= - 40 /80

SO, LHS = RHS

Answer 2

Answer:

Step-by-step explanation:

( 1 ) a+(b+c) = (a+b)+c

a+(b+c) = 2/3 + ( 4/5 + (-5/6))

= 2/3 + ( -1 / 30 )

= 19/ 30

( a+b ) +c = ( 2/3 + 4/5 ) + (-5/6)

= ( 22 / 15) - 5/6

= 19 / 30

( 2 )

a(bc) = (ab) c

2/3 ( 4/5 × -5/6 ) = ( 2/3 × 4/5 ) × -5/6

LHS = 2/3 × -20/30

= - 40 / 90

RHS = 8/15 × -5/6

= - 40 /80

SO, LHS = RHS