Решите уравнения 1) х=2/3x+1 2) x-1/2=3/4x 3) x-2/3=5/6x

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Альфия

21 февраля, 02:07

Решите уравнения 1) х=2/3x+1 2) x-1/2=3/4x 3) x-2/3=5/6x

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Аникитична · Answer 1

Аникитична 21 февраля, 03:32

0

1) делай так 1 м действием 3*10+1=30

Натуся · Answer 2

1) x = 2/3x+1

x-2/3x = 1

3/3x-2/3x = 1

1/3x = 1

x = 1*3 = 3

2) x-1/2 = 3/4x

x-3/4x = 1/2

4/4x-3/4x = 1/2

1/4x = 1/2

x = (1/2) * 4

x = 2

3) x-2/3 = 5/6x

x-5/6x = 2/3

6/6x-5/6x = 2/3

1/6x = 2/3

x = (2/3) * 6

x = 4

4) 1 4/5y = y+4

1 4/5y - y = 4

4/5y = 4

y = 4 * (5/4)

y = 5

5) 2/3y-1/3 = 5/9y

2/3y-5/9y = 1/3

6/9y-5/9y = 1/3

1/9y = 1/3

y = 1/3 * (9/1)

y = 3

6) 3/4y-2/3 = 7/12y

3/4y-7/12y = 2/3

9/12y-7/12y = 2/3

2/12y = 2/3

y = (2/3) * (12/2)

y = 4