Question

Реши уравнения: 32:b=64:8, y:4=49:7, 380-b=330-175, m+32=185-143

Answer 1

1. 32:b=64:8

32:b=8

b=32:8

b=4

2. y:4=49:7

y:4=7

y=28

3. 380-b=330-175

380-b=155

b=380-155

b=225

4. m+32=185-143

m+32=42

m=10