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Ответ

Ответ дан
VoHniK

Відповідь:

Покрокове пояснення:

3х-2=5

3х=5+2

х=7:3

х=2frac{1}{3}

9х-7=6х+14

9х-6х=14+7

3х=21

х=21:3

х=7

3(4х-2)+6=-2х+4

12х-6+6-4+2х=0

14х=4

х=frac{4}{14}=frac{2}{7}

3.  1 - ом 7х

    2-х

7х-38=х+16

8х=54

х= 6.75

7х = 47.25

Ответ в первом 47.25 кг. 6.75 во втором

2. 1кусок 4х

    2  114+х

    3   х

4х+114+х+х=456

6х=342

х= 57

4х=228

Ответ: 1-ий кусок 228м 2-0й 171м 3-ий 57м

проверка: 228+171+57=456м.

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