Решите Уравнения а)2.1361.9-x)=7.12; б)4.2*(0.8+y)=8.82; в)0.2t+1.7t-0.54=0.22; г)5.6z-2z-0.7z+2.65=7.
а)2.1361.9-х)=7.12 в)0.2т+1.7т-0.54=0.22 1.9-х=7.12х2.136 1.9т-0.54=0.22 1.9-х =15.20832 1.9т=0.22+0.54 х=15.20832+1.9 1.9т=0.76 х=17.10832 т =0.4 б)4.2*(0.8+у)=8.82 г)5.6z-2z-0.7z+2.65=7 0.8+у=8.82:4.2 2.9z+2.65=7 0.8+у=2,1 2.9z=7-2.65 у=2.1-0.8 2.9z=4.35 у=1.3 z=1.5