Question

2,34x+2,66x=2,8

 

3y+9y-5,8=3,8 

Answer 1

2.34x+2.66x=2.8,

5x=2.8,

x=2.8:5,

x=0.56.

Ответ:x=0.56.

3y+9у-5.8=3.8,

3y+9y=3.8+5.8,

12y=9.6,

y=9.6:12,

y=0.8.

Ответ:y=0.8