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chubhunter [2.5K]
3 years ago
14

8 less than a number 7 times a number is the same as 4 more than 3 times the number. Find the number

Mathematics
2 answers:
Gwar [14]3 years ago
4 0
X=3

7x-8=3x+4
4x=12
x=3
zzz [600]3 years ago
3 0
7n-8=3n+4. You subtract 3n in both sides and get 4n-8=4. then you add 8 to both sides and get 4n=12. Finally you divide both sides by 4 too get n by itself. n=3
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Answer:

The will play the song at the same time by 4:12 pm

Step-by-step explanation:

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2 years ago
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Nezavi [6.7K]

Answer:

x = 15

Step-by-step explanation:

Simplifying

3x + (8x + 15) = 180

Reorder the terms:

3x + (15 + 8x) = 180

Remove parenthesis around (15 + 8x)

3x + 15 + 8x = 180

Reorder the terms:

15 + 3x + 8x = 180

Combine like terms: 3x + 8x = 11x

15 + 11x = 180

Solving

15 + 11x = 180

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-15' to each side of the equation.

15 + -15 + 11x = 180 + -15

Combine like terms: 15 + -15 = 0

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11x = 180 + -15

Combine like terms: 180 + -15 = 165

11x = 165

Divide each side by '11'.

x = 15

Simplifying

x = 15

5 0
3 years ago
Read 2 more answers
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