Question 83
Subtract -5308 from the sum [(-2100) +(-2001)].
Firstly, we find the sum
(-2100) + (-2001)
= -2100 - 2001
= -4101
Now, subtract -5308 from -4101
-4101 - (-5308)
= -4101 + 5308
=1207
Question 71
Subtract the sum of 12ab−10b2−18a2 and 9ab+12b2+14a2 from the sum of ab+2b2 and 3b2−a2.