Hi!
i have this problem, I'm stuck on.
it says find 2 consecutive multiples of 9 whose sum is -153.
I started of my saying the 1st number is 9x and the 2nd is 9x+9.
I continued on to get, 9x+(9x+9)=-153 and solved it.
I got an irrelevant answer: -9.
I was wondering what I had done wrong.
thank you.
It is right, your x is -9
so the integers are -9*9 and -9*9+9, or
-81 and -72
whoops... hehe sorry.
I forgot about the "pluging in"
:D thanks for the help
To solve the problem, you correctly set up the equation with the first number as 9x and the second number as 9x + 9. The equation you wrote is: 9x + (9x + 9) = -153.
However, when you solved the equation, you seemed to have made a calculation error or made an incorrect assumption. Let's go through the steps again to find where the mistake occurred:
9x + (9x + 9) = -153
Apply the distributive property to simplify:
9x + 9x + 9 = -153
Combine like terms:
18x + 9 = -153
Now, subtract 9 from both sides of the equation:
18x = -162
Finally, divide both sides of the equation by 18 to solve for x:
x = -162 / 18
x = -9
It seems like you made a calculation error when you calculated -9 as the solution for x. Double-check your calculations to see where the mistake occurred.