a) x*1,8=72
x=72:1,8=40
b) x*0,34=1,19*1,02
x*0,34=1,2138
x=1,2138:0,34=3,57
c)x*1,36=4,76*4,08
x*1,36=19,4208
x=19,4208:1,36=14,28
\(x\times1,8=72\)
\(x=72:1,8\)
\(x=40\)
\(x\times0,34=1,19\times1,02\)
\(x\times0,34=1,2138\)
\(x=1,2138:0,34\)
\(x=3,57\)
\(x\times1,36=4,76\times4,08\)
\(x\times1,36=19,4208\)
\(x=19,4208:1,36\)
\(x=14,28\)