Упростите выражения
1)7,2x+1,8x
2)1/6x+1/2x
3)9,3-1,4x
4)3/4x-1/2x
5)10x-6,7x
6)x-1/4x

1) х*(7,2+1,8)=9х2)х*(1/6+1/2)=2/3х3)х*(9,3-1,4)=7,9х4)х*(3/4-1/2)=1/4х=0,25х5)х*(10-6,7)=3,3х6)х*(1-1/4)=3/4х=0,75х