1/log₁₆3-2*log₃48=log₃16-log₃48²=log₃(16/48²)=log₃(1/(3*48))=
=log₃(1/144)=log₃144⁻¹=-log₃(9*16)=-(log₃9+log₃16)=-(log₃3²+log₃4²)=
=-2*log₃3-2*log₃4=-2-2a=-(2а+2).
7 * 3 = 21
280 - 21 = 259
259 : 7 = 37
<span>Ответ: </span>37 кг.
7*2=14
и
7*14=98
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3х-1-2 при х=2.1
3×2.1-1-2
6.3-1-2=3.3
ответ:3.3