если x/y=a, y/z=1/a, то чему равно x/z. Created by AnneHathaway. algebra-ru

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anr18 $\frac{x}{y}=a \; ,\\\\\frac{y}{z}=\frac{1}{a}\; \; \; \; \to \; \; a= \frac{z}{y}\\\\\frac{x}{y}=a=\frac{z}{y}\; \; \to \; \; \frac{x}{y}=\frac{z}{y}\; \; \to \; \; \frac{x}{z}=\frac{y}{y}=1$

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X/y * y/z = a * 1/a
xy/yz = a/a
x/z = 1

Если что: "y" сокращаются, а любое число, деленное на себя, равно 1.

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ketiemelyanenk это правильно

ketiemelyanenk точно

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