Question

4,5*[X-1]-2,3*[x+2]равно 2,1x

Answer 1

4,5*(х-1)-2,3*(х+2)=2,1х
4,5х-4,5-2,3х-4,6=2,1х
4,5х-2,3х-2,1х=4,5+4,6
0,1х=9,1:0,1
х=91