Найдите корень уравнений :
1)( х -67.2) +4.2 =17.4-20.1
2)-100.9-(47.27-х)=5.82-90

( х -67.2) +4.2 =17.4-20.1х-67,2+4,2=-2,7х-63=-2,7х=-2,7+63х=60,3-100.9-(47.27-х)=5.82-90-100,9-47,27+х=-84,18-148,17+х=-84,18х=-84,18+148,17х=63,99