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Art [367]
2 years ago
6

What does 2(n-3)=4n+1 equal

Mathematics
2 answers:
Alex2 years ago
8 0

<em><u>ANSWER</u></em>

2(n-3) = 4n+1

(2×n) + (2×-3) = 4n+1

2n + (-6) = 4n + 1

2n - 6 = 4n + 1

2n - 6+6 = 4n + 1 + 6

2n = 4n + 7

2n - 4n = 4n - 4n + 7

-2n = 7

-2n/-2 = 7/-2

n = -3 1/2

Liono4ka [1.6K]2 years ago
6 0

Answer:

n=4/-3

Step-by-step explanation:

2n-3 = 5n+1

2n-5n = 1+3

-3n = 4

n =4/-3

n=-4/3

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Step 1:
Let x denote the duration for which Melvin plays tennis and y denote the duration for which he swims
Step 2 :
Part A :
Given that the total duration for which he plays and tennis is 110 minutes
so we have x + y = 110
Also given that he plays tennis for 40 minutes more than he swims
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Solving the above 2 equations we have
y+40+y = 110 = > 2y+ 40 = 110 = > y = 2y = 70 = >35
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Step 4 :
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Given he plays and swims for 110 mins exactly, i.e x + y = 110
If Melvin plays tennis for 70 minutes , then x = 70, then the time for which he can swim is 110 - 70 = 40 mins.
He gets only 40 mins for swimming which is not 40 mins more than he plays tennis .
So this case is not possible.
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