3м^2=3*100^2 см^2=30000 см^21дм^2=1*10^2 см^2=100 см^2 3м^2 1дм^2 5см^2= 30000 см^2+ 100 см^2+ 5см^2=30105 см^2 <span> </span>
1\2х-1=1\3*(х+3\4)
1\2х-1=1\3х+1\4
1\2х-1\3х=1\4+1
3\6х-2\6х=1 1\4
1\6х=5\4
х=5\4*6\1
х=15\2=7 1\2
1*1*1*1*1*1*1*1*1*1*1*1=1