A) x:9=13 б)132:k=11 в)m:12=28 г)528:y=66 д)n-11:16=7
x=9x13 k=132:11 m=12x28 y=528:66 n-11=16x7
x=117 k=12 m=336 y=8 n-11=112
-------------------------------------------------------------------- n= 112+11
117:9=13 132:12=11 336:12=28 528:8=66 n123
13=13 11=11 28=28 66=66 ----------------
123-11:16=7
7=7