5. Find the product using suitable properties:
(a) 14% (-5) + 14 x 7
(c) 15+ (-25) + (-10) x (-5)
(e) 625 % (-35) + (-625) % 65
(g) - 57 X (-19) + 57
(b) 8 x 53 x (121)
(d) 7(50 - 3)
(f) (-17) (-28)
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Answer:
(a)
=(14/100) (-5) + 14× 7
Dmas rule
=(0.14) (-5) +14 ×7
= (-0.7) +14 ×7
= (-4.9) +14 ; -(-0.7 ×7 = - 4.9)
=9.1
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