(a) −45 −57
So, −45=−4×75×7=−2835 and
−57=−5×57×5=−2535
−28<−25
So, −2835<−2535
Thus, −45<−57
(b) −78 14−16
The standard form of 14−16 is 14÷−2−16÷−2=−78
So, −45<−57
Thus, −78=14−16
(c) 0 −76
Clearly, −76 is a negative rational number which will be less than zero.
So, 0>−76