а)2*(5х-4)-3*(10х-3)=100
10x – 8 – 30x + 9 = 100
10x – 30x = 100 – 9 + 8
-20x = 99
x = -4.95
б)-4*(0,5х-2)-3*(0,4х-3)=90
– 2x + 8 – 1.2x + 9 = 90
– 2x – 1,2x = 90 – 9 – 8
-3.2x = 73
x = -22.8125
в)-3*(0,6х-0,8х-х)=0
– 1.8x + 2.4x + 3x = 0
– 1,8x + 2,4x + 3x = 0
x = 0
д)0,5*(0,4х-0,5)-0,3*(0,2х-0,4)=40
0.2x – 0.25 – 0.06x + 0.12 = 40
0,2x – 0,06x = 40 – 0,12 + 0,25
0.14x = 40.13
14x = 4013
x = 4013/14
х=286,642857143
а)2*(5х-4)-3*(10х-3)=100
10x – 8 – 30x + 9 = 100
10x – 30x = 100 – 9 + 8
-20x = 99
x = -4.95
б)-4*(0,5х-2)-3*(0,4х-3)=90
– 2x + 8 – 1.2x + 9 = 90
– 2x – 1,2x = 90 – 9 – 8
-3.2x = 73
x = -22.8125
в)-3*(0,6х-0,8х-х)=0
– 1.8x + 2.4x + 3x = 0
– 1,8x + 2,4x + 3x = 0
x = 0
д)0,5*(0,4х-0,5)-0,3*(0,2х-0,4)=40
0.2x – 0.25 – 0.06x + 0.12 = 40
0,2x – 0,06x = 40 – 0,12 + 0,25
0.14x = 40.13
14x = 4013
x = 4013/14
х=286,642857143