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gtnhenbr [62]
3 years ago
10

Can someone please tell me if i am right?

Mathematics
1 answer:
pentagon [3]3 years ago
4 0
Second one is correct, that is an identity.

Third one is a contradiction:
6x - 15 = 3 * (2x - 6)    ------>    6x - 15 = 6x - 18

Fourth one:
5x - 3 * (x - 4) = 2 * (x - 6) ---> 5x - 3x + 12 = 2x - 12 ---> 2x + 12 = 2x -12
So this is a contradiction as well.
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ArbitrLikvidat [17]

Answer:

x = -5/2

Step-by-step explanation:

4x+2 = -8

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The first step in isolating x is to subtract 2 from each side

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Divide each side by 4

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x = -10/4

Simplify the fraction

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