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dedylja [7]
3 years ago
15

If 3 times a certain number is increased by 4 the result is 28.

Mathematics
2 answers:
Tom [10]3 years ago
7 0
See photo for solution and if this helped please mark me as brainliest :)

kupik [55]3 years ago
5 0

Answer:

Step-by-step explanation:

3x+4=28

3x=28-4

3x=24

X=24/3

X=8

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Answer:

B

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Note:

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<h3>What are Like terms?</h3>

Like terms are those terms that are having the same variables, also the variables are of the same order as well.

for example, 25x and 5x are like terms; 30xy and 7xy are like terms, 9x³ and 4x² are not like terms, etc.

We know that to simplify an expression we need to add or subtract like terms, therefore,

(6x^2- 3 - 5x^3) -(4x^3+2x^2 - 8)\\\\= 6x^2- 3 - 5x^3 -4x^3-2x^2 + 8\\\\= - 5x^3 -4x^3+6x^2-2x^2+8-3\\\\ = -9x^3+4x^2+5

Hence, the simplification of the expression (6x²-3-5x³)-(4x³+2x²-8) is -9x³+4x²+5.

Learn more about Like Terms:

brainly.com/question/2513478

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