100 !
1) -2/3 + (1/4 - x) = 0; 2) -3/20 + (5x - 0,2) = 0; 3) -7/24 + (2x - 1/4) = 0.
! ​

1) -2/3 +(1/4 - х)= 0

-2/3 + 1/4 - х = 0

х = -2/3 + 1/4

х = -8/12 + 3/12

х= -5/12

2) -3/20 + (5x - 0,2) = 0

-3/20 + 5х - 0,2 = 0

5х = 3/20 + 0,2

5х = 3/20 + 4/20

5х = 7/20

х = 7/100

х = 0,07

3)-7/24 + (2x - 1/4) = 0

-7/24 + 2х -1/4 = 0

2х = 7/24 + 1/4

2х = 7/24 + 6/24

2х = 13/24

х= 13/48