Question

найдите х в пропорциях 1 4/5/2.5 7.2/6х+1 полное решение

Answer 1

=14/5*1/2.5*7.2/6x+1=1.12*7.2/6x+1
6x+1=72/1.12
6x=72/1.12-1
6x=72-1.12/1.12=70.88/1.12
x=70.88/1.12*1/6=70.88/6.72