7,54к-3,6к=5,91
3,94к=5,91
к=5,91:3,94
к=1,5
184 - 38 = 146 - второе число
146 + 38 = 184
1. ![483042:6\cdot8+8044=652100](https://tex.z-dn.net/?f=483042%3A6%5Ccdot8%2B8044%3D652100)
1) ![483042:6=80507](https://tex.z-dn.net/?f=483042%3A6%3D80507)
2) ![80507\cdot8=644056](https://tex.z-dn.net/?f=80507%5Ccdot8%3D644056)
3) ![644056+8044=652100](https://tex.z-dn.net/?f=644056%2B8044%3D652100)
============================================
2. ![372160:4\cdot7-72195=579085](https://tex.z-dn.net/?f=372160%3A4%5Ccdot7-72195%3D579085)
1) ![372160:4=93040](https://tex.z-dn.net/?f=372160%3A4%3D93040)
2) ![93040\cdot7=651280](https://tex.z-dn.net/?f=93040%5Ccdot7%3D651280)
3) ![651280-72195=579085](https://tex.z-dn.net/?f=651280-72195%3D579085)
=============================================
3. ![111105:9\cdot6-65981=8089](https://tex.z-dn.net/?f=111105%3A9%5Ccdot6-65981%3D8089)
1) ![111105:9=12345](https://tex.z-dn.net/?f=111105%3A9%3D12345)
2) ![12345\cdot6=74070](https://tex.z-dn.net/?f=12345%5Ccdot6%3D74070)
3) ![74070-65981=8089](https://tex.z-dn.net/?f=74070-65981%3D8089)
Пусть ас=х, тогда
св=30-х
25\%*х=1/6*(30-х)
1/4х=5-1/6х
1/4х+1/6х=5
5/12х=5
х=12 см ас
67+2*3(465*100)=279067 в начале делаем в скобках потом 2*3 и делаем потом 67+