db28186565 db28186565

07-04-2020
Mathematics

contestada

Mrs. Porte wrote the equation below on the board.
ax+ 7 = 8x + b
Enter values of a and b for which x = 9 is a solution of Mrs. Porte's equation.

Respuesta :

wyattbright2021 wyattbright2021

07-04-2020

Answer:

b=-65

Step-by-step explanation:

7 = 8x+b

Put in 9 for x

7 = 8(9) + b

Multiply.

7=72 + b

subtract 72 from both sides to get b by itself.

(7-72) = (72-72) + b

Simplify.

-65 = b

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