Question

решите уравнения : 5.2+0.5*(x-3)=3-0.8*(x+4) ; 1/11-13x=4 1/11-3x

Answer 1

1) 5.2+0.5*(x-3)=3-0.8*(x+4)
5.2+0.5х+1.5=3-0.8х+3.2
0.5х×0.8х=6.2-5.2-1.5
1.3х=-0.5
х=-(0.5/1.3)