1)20+8х-20=14х+12
8х-14х=12
-6х=12
х=2
2)15х-1=21х-3-2
15х-21х=-3-2+1
-6х=-4
х=1,5
Объяснение:
20 + 4(2x -5 ) = 14x + 12
20 + 8x - 20 = 14x + 12
8x - 14x = 12
-6x = 12
x = -2
Б)
15 x - 1 = 3(7x - 1) - 2
15x - 1 = 21x -3 -2
15x - 21 x = 1 -3 -2
-6x = -4
x = 4/6
1)20+8х-20=14х+12
8х-14х=12
-6х=12
х=2
2)15х-1=21х-3-2
15х-21х=-3-2+1
-6х=-4
х=1,5
Объяснение:
20 + 4(2x -5 ) = 14x + 12
20 + 8x - 20 = 14x + 12
8x - 14x = 12
-6x = 12
x = -2
Б)
15 x - 1 = 3(7x - 1) - 2
15x - 1 = 21x -3 -2
15x - 21 x = 1 -3 -2
-6x = -4
x = 4/6