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Alchen [17]
3 years ago
15

Which is a correct first step for solving this equation? -3x+2−5x−7=4x+2

Mathematics
2 answers:
den301095 [7]3 years ago
8 0

Answer:

(D)-8x-5=4x+2

Step-by-step explanation:

The given equation is:

-3x+2-5x-7=4x+2

Combining the like terms, we get

-3x-5x+2-7=4x+2

-8x-5=4x+2

which is the required correct step for solving the given equation.

therefore, again combining the like terms, we get

-8x-4x=2+5

-12x=7

x=\frac{-7}{12}

thus, option D is correct.

Eduardwww [97]3 years ago
4 0

D would be the correct answer in this case.

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Given <em>z</em> = 3 + <em>i</em>, right away we can find

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We can simplify this further. We know that <em>z</em> lies in the first quadrant, so

0 < arg(<em>z</em>) = arctan(1/3) < <em>π</em>/2

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