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Blizzard [7]
3 years ago
9

Which is the solution to the equation below? 4n+5=25-3n

Mathematics
2 answers:
tiny-mole [99]3 years ago
7 0

Answer:

n = \frac{20}{7}

Step-by-step explanation:

4n + 5 = 25 - 3n\\4n + 3n = 25 - 5 \\7n = 20\\\\n = \frac{20}{7}

Maurinko [17]3 years ago
6 0

Answer:

n = 20/7

Step-by-step explanation:

4n+5=25-3n

Add 3n to each side

4n+3n+5=25-3n+3n

7n +5 = 25

Subtract 5 from each side

7n+5-5=25-5

7n = 20

Divide by 7

7n/7 = 20/7

n = 20/7

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The first term is -43.

Explanation:

an = a + (n - 1)d

a12 = a + 11d = 56, first equation
a21 = a + 20d = 101, second equation

Subtract the second equation from the first equation, cancelling +a and -a
11d - 20d = 56 - 101
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Subtitute d into the first equation
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a = -43

a refers to the first term, hence the first term is -43.
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Answer:

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Step-by-step explanation:

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