Решите уравнение: 1)1 1/4y+7,5=5y 2)0,5x-7=-2/3x 3)6y-2 4/5=2,5y. Created by irishka1609. matematika-ru

5=2,5y...

July 2022 1 4 Report

Решите уравнение:
1)1 1/4y+7,5=5y
2)0,5x-7=-2/3x
3)6y-2 4/5=2,5y

Answers & Comments

qwerty1109 1/4у-5у= -7,5
-4 3/4у= - 7,5
у= -7,5:(-4 3/4)
у= -15/2:(-19/4)
у=30/19
у=1 11/19
0,5х-7=2/3х
0,5х-2/3х=7
-1/6х=7
х=-42
6у-2,5у=2,8
4,5у=2,8
у=0,8
Здесь 2 4/5=2,8

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