Question

Fill in the place of question mark
(a) ?-8/21=8/21
(b)42/54=7/?​

Answer 1

Answer:

b. 9 ....

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Answer 2

Answer:

$1.( - 1) \\ - 1 \times - 8 \div 21 = 8 \div 21 \\ 2.(9) \\ in \: the \: table \: of \: 6 \: \: \: \: (54) \: comes \: at \: 9 \: number \\ 42 \div 54 = 7 \div 9$

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