Question

verfiy (-2+5)+3=-2(5+3) Lhs=RHS PROVR IT

Answer 1

Answer:

Solution:

LHS =[2/5+(-3/4)]+(-4/7)

= (2/5-3/4)-4/7

= [(8-15)/20] - 4/7

= -7/20 - 4/7

= (-49 - 80 )/140

= -129/140 ---(1)

RHS = 2/5 + [-3/4+(-4/7)]

= 2/5 + (-3/4-4/7)

= 2/5 + [(-21-16)/28]

= 2/5 - 37/28

= ( 56 - 185)/140

= -129/140 ---(2)

From (1) and (2), we conclude that,

LHS = RHS

Therefore,

(2/5 +-3/4)+-4/7=2/5+(-3/4+-4/7)

i.e

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

[Associative property under

addition ]

Step-by-step explanation:

Answer 2

Answer:

(-2+5)+3=-2(5+3)

LHS

(-2+5)+3

3+3

6

RHS

-2+(5+3)

-2+8

6

LHS=RHS