Ответ:
8) 1/(7^(-4)) * 1/(7^3) = 1/(7^(-4+3)) = 1/(7^(-1))=7
9) x-x/12=11/3
12x-x=44
11x=44
x=4
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Ответ:
8) 1/(7^(-4)) * 1/(7^3) = 1/(7^(-4+3)) = 1/(7^(-1))=7
9) x-x/12=11/3
12x-x=44
11x=44
x=4