Let x = your number.
x^2 - 21 = 4x. Subtract 4x from both sides.
x^2 - 4x - 21 = 0. Factor.
(x - 7) (x + 3) = 0. Set each term to 0.
x + 3 = 0. Subtract 3 from both sides.
x = -3. This is the negative solution.
Set the other term equal to zero.
x - 7 = 0. Add 7 to each side.
x = 7. This is the positive solution.
The answer is 6 because 39/13=3 and 18/3=6
The first one, the opposite of any negative number is the same number but positive...and vise versa.
Angelica is 5 steps to the right while Brion is 12 steps to the left it is 17 steps because theyre going in the opposite directions :P
<em>please give brainly if you can</em>
Answer:
11 - 3x = 75 - -1x
X = -16
Hope this helps
:0 can I have brainliest
Step-by-step explanation:
