Ответ:
Пошаговое объяснение:
1)x = 1 *2/5 * 5 = 7/5*5 = 7
2)x = 5 * 3/7 * 7 = 38/7 * 7 = 38
3)(x + 3) * 3 = 2 * 6 3x + 9 = 12 3x = 3 x = 1
4) x - 3 = 24/6 = 4 x = 4 + 3 = 7
5) (2x + 7) * 5 = 20 * 3 10x + 35 = 60 10x = 25 x = 2.5
6)(2x-5)*3 = 12*5 6x - 15 = 60 6x = 75 x = 12.5