Question

Question 2(b)
Verify the following
$(-21)\times \left[\right(-4)+(-6\left)\right]=\left[\right(-21)\times (-4\left)\right]+\left[\right(-21)\times (-6\left)\right]$

Answer 1

L.H.S. =$(-21)\times \left[\right(-4)+(-6\left)\right]=(-21)\times [-4-6]=(-21)\times [-10]=210$
R.H.S = $\left[\right(-21)\times (-4\left)\right]+\left[\right(-21)\times (-6\left)\right]=84+126=210$
$(-21)\times \left[\right(-4)+(-6\left)\right]=\left[\right(-21)\times (-4\left)\right]+\left[\right(-21)\times (-6\left)\right]$