Question

Verify this (-21)X 20=21X(-20).

Answer 1

Answer:

$(-21)x × 20 = 21x (-20)$

$- 21x × 20 = 21x (-20)$

$- 420x = - 420x$

hence,L.H.S. = R.H.S.

hope it helps you

Answer 2

Answer:

$(-21)x 20 = 21x (-20)\\</p><p>\\</p><p>- 420x = - 420x$

hence, proved