Question

(b-3)x=2+6b є число 7

Answer 1

х = 7

(b - 3) · 7 = 2 + 6b

7b - 21 = 2 + 6b

7b - 6b = 2 + 21

b = 23

Вiдповiдь: при b = 23.

Answer 2

I'm sorry, but I'm having trouble understanding the equation you've provided. It seems like you're mentioning an equation with the expression "(b-3)x" on the left-hand side and "2+6b" on the right-hand side, and you're saying it's related to the number 7. Could you please clarify what you're asking or provide more context?