Question 13
(−10)×(−5)+(−7) is equal to
(a) -57 (b) 57 (c) -43 (d) 43
(−10)×(−5)+(−7)={(−10)×(−5)}+(−7)=50+(−7)=50−7=43
Question 180(iii)
Simplify
(413)4×(137)2×(74)3