1) 32:b = 64:8
32:b = 8
b = 32:8
b= 4
32:4 = 64:8
8=8
2)y:4= 49:7
y:4 = 7
y= 7×4
y=28
28:4=49:7
7=7
3)380-b=330-175
380-b=155
b=380-155
b=225
380-225=330-175
155=155
4)m+32=185-143
m+32=42
m=42-32
m=10
10+32=185-143
42=42
1) 32:b = 64:8
32:b = 8
b = 32:8
b= 4
32:4 = 64:8
8=8
2)y:4= 49:7
y:4 = 7
y= 7×4
y=28
28:4=49:7
7=7
3)380-b=330-175
380-b=155
b=380-155
b=225
380-225=330-175
155=155
4)m+32=185-143
m+32=42
m=42-32
m=10
10+32=185-143
42=42