решите уравнения (50-x)÷7+195=40×5(270÷y-2)×30=7×120. Created by DashaPav1. matematika-ru

решите уравнения (50-x)÷7+195=40×5(270÷y-2)×30=7×120...

August 2022 1 4 Report

решите уравнения
(50-x)÷7+195=40×5
(270÷y-2)×30=7×120

Answers & Comments

ivawka2006 (50-x)÷7+195=40×5
(50-х)/7+195=200
(50-х)/7=200-195
(50-х)/7=5
(50-х)=5*7
50-х=35
х=50-35
х=15

(270÷y-2)×30=7×120
(270/у-2)*30=840
(270/у-2)=840/30
(270/у-2)=28
270/у=28+2
270/у=30
у=270/30
у=9

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