Пошаговое объяснение:
1) 4.(2x - 5)-9.(5 - x)=6.(x + 2)
8х - 20 - 45 + 9х = 6х + 12
11х= 12 + 65
11х= 77
х= 77 : 11
х= 7
2) 2-(3x +1) -5x + 3 = 4.(4- x)
2 - 3х - 1 - 5х + 3 = 16 - 4х
-4х= 16 - 4
-4х = 12
х= 12 : (-4)
х= - 3
3) 3-(4x - 3)-2.(2 - x)=2-(4x – 3)
3 - 4х + 3 - 4 + 2х= 2 - 4х + 3
2х = 5 - 2
2х = 3
х= 3 : 2
х= 1,5
4) 6 (5x-2)-4.(4+2x) = 9.(x + 2)
30х - 12 - 16 - 8х = 9х + 18
13х = 18 +28
13х= 46
х= 46 :13
х= 3 7/13
1. = 8х-20-45+9х=6х+12
11х=12+65
11х=77
х=77÷11
х=7
2.= 2-3х-1-5х+3=16-4х
-4х=12
х=12÷(-4)
х=-3
3.= 3-4х+3-4+2х=2-4х+3
2х=5-2
2х=3
х=3÷2
х=1,5
4.= 30х-12-16-8х=9х+18
13х=18+28
13х=46
х=46÷13
х=3 7/13
Пошаговое объяснение:
1) 4.(2x - 5)-9.(5 - x)=6.(x + 2)
8х - 20 - 45 + 9х = 6х + 12
11х= 12 + 65
11х= 77
х= 77 : 11
х= 7
2) 2-(3x +1) -5x + 3 = 4.(4- x)
2 - 3х - 1 - 5х + 3 = 16 - 4х
-4х= 16 - 4
-4х = 12
х= 12 : (-4)
х= - 3
3) 3-(4x - 3)-2.(2 - x)=2-(4x – 3)
3 - 4х + 3 - 4 + 2х= 2 - 4х + 3
2х = 5 - 2
2х = 3
х= 3 : 2
х= 1,5
4) 6 (5x-2)-4.(4+2x) = 9.(x + 2)
30х - 12 - 16 - 8х = 9х + 18
13х = 18 +28
13х= 46
х= 46 :13
х= 3 7/13
Пошаговое объяснение:
1. = 8х-20-45+9х=6х+12
11х=12+65
11х=77
х=77÷11
х=7
2.= 2-3х-1-5х+3=16-4х
-4х=12
х=12÷(-4)
х=-3
3.= 3-4х+3-4+2х=2-4х+3
2х=5-2
2х=3
х=3÷2
х=1,5
4.= 30х-12-16-8х=9х+18
13х=18+28
13х=46
х=46÷13
х=3 7/13