This Post Has 6 Comments

1. [tex]12 + 2x + 1 = 90 \\ 12 + 1 + 2x = 90 \\ 13 + 2x = 90 \\ 2x = 90 - 13 \\ 2x = 77 \\ x = 38.5[/tex]

   this is the best I can try to do

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2. X = 5

   Solving steps:

   1. 2x - 45 = - 35

   2. 2x = - 35 + 45

   3. 2x = 10

   4. x = 5

   Hope that helps

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3. equilateral triangle idk the rest srry

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4. i don't now

   Step-by-step explanation:

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5. x=6

   Step-by-step explanation:

   this is the answer

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6. 9514 1404 393

     x = 6

   Step-by-step explanation:

   The parallel lines divide the sides proportionally. So, we can write the equation ...

     x/4 = (x +3)/6

     3x = 2(x +3) . . . . . multiply by 12

     x = 6 . . . . . . . . . . . subtract 2x

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