Question

2)18•(b-7×)=90 приb=40​

Answer 1

Ответ:

18 *(40-7х)=90

Пошаговое объяснение:

40-7х=5

7х=40- 5

7х=35

х=5

Answer 2

To solve the equation 18(b - 7x) = 90 for b = 40, we can substitute the value of b into the equation and solve for x.

18(b - 7x) = 90

Substitute b = 40:

18(40 - 7x) = 90

Now we can simplify and solve for x:

720 - 126x = 90

Subtract 720 from both sides:

-126x = 90 - 720

-126x = -630

Divide both sides by -126:

x = (-630) / (-126)

x = 5

Therefore, when b = 40, the value of x that satisfies the equation 18(b - 7x) = 90 is x = 5.