Автор - Zoia1214

Решите уравнения:
6z+9z-5.7=4.8
(0.9+x):6=0.3

Ответ

Автор - kdid
6z+9z-5.7=4.8
15z=4.8+5.7
15z=10.5
z=10.5/15
z=0.7
(0.9+x):6=0.3
0.9+x=0.3*6
0.9+x=1.8
x=1.8-0.9
x=0.9

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