Упростите выражение:
7,2х+1,8х; 1\6х+1/2х; 9,3х-1,4х; 3/4х-1/2х; 10х-6,7х; х-4/5х
7,2х+1,8х; 1\6х+1/2х; 9,3х-1,4х; 3/4х-1/2х; 10х-6,7х; х-4/5х
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7,2х+1,8х=x(7,2+1,8)=9х1/6х+1/2х=х(1/6+1/2)=х(1/6+3/6)=4/6х=2/3х
9,3х-1,4х=х(9,3-1,4)=7,9х
3/4х-1/2х=х(3/4-1/2)=х(3/4-2/4)=1/4х
10х-6,7х=х(10-6,7)=3,3х
х-4/5х=х(1-4/5)=1/5х