Question

7х + 3 = 17и 5х + 4b = 6?​

Answer 1

Ответ:b = -1

Пошаговое объяснение:7х+3=17

7x = 17 - 3

7x = 14

x = 14:7

x = 2

5х+4b=6

5*2 + 4b = 6

10 + 4b = 6

4b = 6 - 10

4b = -4

b = -1