Question

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

Answer 1

( х -67.2) +4.2 =17.4-20.1
х-67,2+4,2=-2,7
х-63=-2,7
х=-2,7+63
х=60,3

-100.9-(47.27-х)=5.82-90
-100,9-47,27+х=-84,18
-148,17+х=-84,18
х=-84,18+148,17
х=63,99