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

Question

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

Answer 1

1) 7,2х + 1,8х = 9,0х
2) 1/6х + 1/2х = 1/6х + 3/6х = 4/6х = 2/3х
3) 9,3 - 1,4х  = 9,3х - 1,4х
4) 3/4х - 1/2х = 3/4х - 2/4х = 1/4х
5) 10х - 6,7х = 3,3х
6) х - 1/4х = 4/4х - 1/4х = 3/4х