Question

If p=-2/3 and q=9/20,verify the property of p+q=q+p

Answer 1

Step-by-step explanation:

-2/3+9/20=9/20+-2/3

lcm is 60=lcm is 60

-40+27÷60=27+-40÷60

-13÷60=-13÷60

it is verified

and it is distributive property

Answer 2

Answer- The above question is from the chapter 'Rational Numbers'.

Concept used: Commutative law of addition of rational numbers.

It states that for two rational numbers, a and b,

a + b= b + a

Given: p= -2/3 and q= 9/20

LHS= p + q

      = -2/3 + 9/20

      = (-40 + 27)/ 60

      = -13/60

RHS= q + p

      = 9/20 + (-2/3)

      = 9/20 - 2/3

      = (27 - 40)/ 60

      = -13/60

∵LHS= RHS,

∴ p + q = q + p