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Ulleksa [173]
3 years ago
13

Which of the following best describes the solution to the equation below? 3(x+ 7) = 3x + 21​

Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0

Answer:

x = x; the solution has infinite solutions

Step-by-step explanation:

3(x+ 7) = 3x + 21​; distribute the 3 on the left side

3x + 21 = 3x + 21; now subtract 21 from both sides

3x = 3x; divide by 3

x = x; the solution has infinite solutions.  Since both terms are equal any value for x will be true on this equation.

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He used 7/27 kg of sugar.

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you know that the sum of -5 and another integer is a positive integer.what can you conclude about the sign of the other integer?
denis-greek [22]
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adding/subtracting numbers with same/different signs : if the signs are the same, whether both negative or positive, then the answer will contain the same sign.
Example : -2 + (-2) = -2-2 = -4 : both signs are negative, the sign stays negative.
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However, if the signs are different, u subtract the smallest number from the largest number and take the sign of the larger number.
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-5 + 2 = -3....I took 5 - 2 and got 3, but used the larger number sign (-) making the answer -3.

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3 years ago
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