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9.
Which equations are equivalent?
III.
1.
12x +30-10x +4= 40
40=2(15-x)+4
2(6x +15-5x) +4=40
II.
A.
I & II
c.
I & III
II & III
D.
None of the equations are equivalent​

9Which equations are equivalentIII112x 3010x 4 4040215x426x 155x 440IIAI amp IIcI amp IIIII amp IIIDNone of the equations are equivalent class=

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sqdancefan

Answer:

  C.  I & III

Step-by-step explanation:

I simplifies to ...

  2(6x +15 -5x) +4 = 40

  12x +30 -10x +4 = 40

  2x +34 = 40

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II simplifies to ...

  40 = 2(15 -x) +4

  40 = 30 -2x +4

  40 = -2x +34 . . . . . . not equivalent to I (sign of x-term is different)

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III simplifies to ...

  12x +30 -10x +4 = 40

  2x +34 = 40 . . . . . . equivalent to I

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I & III are equivalent