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hichkok12 [17]
3 years ago
5

Can someone explain this I don't understand. 8x + 18 - x - 9

Mathematics
2 answers:
lisov135 [29]3 years ago
4 0
Simplifying8x + 18 + -1x + -9 = 0
Reorder the terms:18 + -9 + 8x + -1x = 0
Combine like terms: 18 + -9 = 99 + 8x + -1x = 0
Combine like terms: 8x + -1x = 7x9 + 7x = 0
Solving9 + 7x = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.9 + -9 + 7x = 0 + -9
Combine like terms: 9 + -9 = 00 + 7x = 0 + -97x = 0 + -9
Combine like terms: 0 + -9 = -97x = -9
Divide each side by '7'.x = -1.285714286
Simplifyingx = -1.285714286
vladimir1956 [14]3 years ago
3 0
You have to start with thy x and the division than the minus and the plus

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Answer:

x=-10

Step-by-step explanation:

the picture is showing

1+1= -1 + -1 + -1 + -1 + -1 + -1 + -1 + -1 + -x

simplified its:

2= -8 + -x

I think that the answer is x=-10 cuz if u did -8 - -10 then the two negatives make a positive and it makes 2 but idk if the minus sign before the x means minus or negative so this might be the answer but dont blame me if im wrong. I warned you. If its right plz write that.

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13. Dallon bought a canoe that cost $33.75. The sales tax was 5.25%. What was his total cost including tax?13. Dallon bought a c
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I need help ASAP <br> What is the operation in the equation 5n =-20?
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6 0
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Read 2 more answers
What adds ups to 5 but multiplies to give you 12
qaws [65]
X + y = 5
    xy = 12

x + y = 5
      y = -x + 5

                xy = 12
      x(-x + 5) = 12
  x(-x) + x(5) = 12
       -x² + 5x = 12
             - 12   - 12
-x² + 5x - 12 = 0
 x² - 5x + 12 = 0
x = 5 ± √25 - 48
                2
x = -5 ± √-23
           2
x = -5 ± 4.79i
            2
x = -5 + 4.79i    or    x = -5 - 4.79i
            2                              2
x = -2.5 + 2.395i   or    x = -2.5 - 2.395i
y = -2.5 - 2.395i   or    y = -2.5 + 2.395i

The two numbers that add up to 5 and multiply to 12 is -2.5 ± 2.395i, which is -2.5 + 2.395i and -2.5 - 2.395i.
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3 years ago
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