2+6а+4а=92
6a + 4a = 92 – 2
10a = 90
a = 9
проверка
2+6*9+4*9=92
92=92
8x – 5x – 3 = 6
8x – 5x = 6 + 3
3x = 9
x = 3
8*3-5*3-3=6
6=6
12х-х-55=0
12x – x = 0 + 55
11x = 55
x = 5
12*5-5-55=0
0=0
2+6а+4а=92 6a + 4a = 92 – 2 10a = 90 a = 9 проверка 2+6*9+4*9=92 92=92 8x – 5x – 3 = 6 8x – 5x = 6 + 3 3x = 9 x = 3 проверка 8*3-5*3-3=6 6=6 12х-х-55=0 12x – x = 0 + 55 11x = 55 x = 5 проверка 12*5-5-55=0 0=0
2+6а+4а=92
6a + 4a = 92 – 2
10a = 90
a = 9
проверка
2+6*9+4*9=92
92=92
8x – 5x – 3 = 6
8x – 5x = 6 + 3
3x = 9
x = 3
проверка
8*3-5*3-3=6
6=6
12х-х-55=0
12x – x = 0 + 55
11x = 55
x = 5
проверка
12*5-5-55=0
0=0
2+6а+4а=92 6a + 4a = 92 – 2 10a = 90 a = 9 проверка 2+6*9+4*9=92 92=92 8x – 5x – 3 = 6 8x – 5x = 6 + 3 3x = 9 x = 3 проверка 8*3-5*3-3=6 6=6 12х-х-55=0 12x – x = 0 + 55 11x = 55 x = 5 проверка 12*5-5-55=0 0=0