Question

plzz answers it correctly with steps ​

Answer 1

Answer:

Verification

Step-by-step explanation:

pq = qp.

(is always true as multiplication is associative)

-2/3 * 9/20 = -3/10

9/20 * -2/3 = -3/10

Since they are equal, the equation is thus proved to be true.

p+q = q+p

(is always true as addition is associative)

-2/3 + 9/20 = (-40+27)/60 = -13/60

9/20 - 2/3 = (27-40)/60 = -13/60

Since they are equal, the equation is thus proved to be true.

p-q ≠ q-p (is always false as subtraction is not associative)

-2/3 -9/20 = (-40-27)/60 = -67/60

9/20 - 2/3 = (27-40)/60 = -13/60

Since they are not equal, the equation is thus proved to be true.

p÷q ≠ q÷p (is always false as division is not associative)

-2/3 ÷ 9/20 = -2/3 * 20/9 = -40/27

9/20 ÷ -2/3 = 9/20 * -3/20 = -27/40

Since they are not equal, the equation is thus proved to be true.

Hope you'll understand it.

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