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solong [7]
3 years ago
13

2n+7+7n=13+3n+8n please help

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
6 0

2n+7+7n=13+11n

7+9n=13+11n

9n-11n=13-7

-2=6

-2/-2  6/-2

-3        

By the way that( / )means division lol

Rasek [7]3 years ago
3 0

first combine like terms so 2n + 7n which is 9n


so 9n + 7 = 13 + 3n + 8n


then combine on other side so 9n + 7 = 13 + 11n

then subtract 7 to 13 so 6

sp 9n + 6 = 11n

then subtract 9 to the other side so 2n


6 = 2n then divide all by 2

n= 3

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<h2>Answer:</h2>

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<h2>Step-by-step explanation:</h2>

In a circuit containing two resistors R_1 and R_2 connected together in parallel, the total resistance R_T is given by;

\frac{1}{R_T} = \frac{1}{R_1}  + \frac{1}{R_2}              ---------(i)

<em>Make </em>R_2<em> subject of the formula;</em>

=> \frac{1}{R_2} = \frac{1}{R_T}  - \frac{1}{R_1}  

=> \frac{1}{R_2} = \frac{R_1 - R_T}{R_TR_1}

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