43 Solve the following expressions using rules:
(a) (-17) 4+2] [8 (-8) + 4)
(b) 49 + [3 (4-9)] + (-5)
Answers
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3
a is not know
b is place of in third bracet 3 of ( 4-9)
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0
Answer:
Step-by-step explanation:
(a) [(-17)+4÷2]÷[8÷(-8)+4]
=[(-17)+4÷2]÷[8÷(-8)+4]
=[(-17)+2]÷[-1+4]
=(-15)÷3
=-5
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