Question

2.3y+31+2.5y ровно 67 решите паже

 

 

Answer 1

2.3y+31+2.5y=67

4,8у=67-31

4,8у=36  /4,8

у=7,5

Answer 2

2.3y+2.5y=67-31

4.8y=36

y=7.5