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3 years ago

9.

Mathematics

1 answer:

RoseWind [281]3 years ago

5 0

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

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)

III simplifies to ...

12x +30 -10x +4 = 40

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

___

I & III are equivalent

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