Question

(i) 20 x {5 +(-7)} = (20 x 5) + {20 * (-7)}​

Answer 1

Answer:

I proved that check it the answer is correct

Answer 2

Answer: See the proof below in explanation.

Step-by-step explanation:

20×{5+(-7) } = (20×5) +{20×(-7) }

20×(-2) = 100+(-140)

-40 = -40

Hence proved.