1) 0
2) -11
3) -4
4) 2
5) -10,31
6) 2
Пошаговое объяснение:
1) 5x-5-4x-3=2
9x = 0
x = 0
2) 7x - 9 - 2(4 + 2x) = 16
7x-9-8+4x=16
7x-4x=-16-9-8
3x=-33
x=-11
3) (-4+2x)×6=16+2x
-24+12x=16+2x
12x-2x=-24-16
10x=-40
x=-4
4) 1,2(14-10x)+6(2-0,4x)=0
16,8-12x+12-2,4x=0
12x-2,4x=16,8+12
14,4x=28,8
x=2
5)x/3 - 3x/7 = -4/21
7x - 9x. -2x
= = -10,5
21. 21
-4÷21= -0.19
-10,5+0,19= -10,31
6) 5 (3,6-x)
6- =2
7
18-x
6- = 2
7
18- (6-2) / 7
18- 4 / 7
14/7
2
P.S.: Надеюсь я правильно и понятно объяснил.
1) 5х -5 - 4х - 3 = 2
5х - 4х = 2 + 5 + 3
x = 10
2) 7x - 9 - 2(4 + 2x) = 16
7x - 9 - 8 - 4x = 16
7x - 4x = 16 + 9 + 8
3x = 33
x = 11
3) (-4 + 2x) × 6 = 16 + 2x
-24 + 12x = 16 + 2x
12x - 2x = 16 + 24
10x = 40
x = 4
4) 1,2(14 - 10x) + 6(2 - 0,4x) = 0
16,8 - 12x + 12 - 2,4x = 0
-12x - 2,4x = - 16,8 - 12 | × (-1)
12x + 2,4x = 16,8 + 12
14,4x = 28,8
x = 2
5) x/3 - 3x/7 = - 4/21 | × 21
7x - 9x = -4
-2x = -4
x = 2
6) 6 - 5(3,6 - x)/7 = 2 | × 7
42 - 18 + x = 14
x = 14 - 42 + 18
x = -10