2 years ago

Solve each of these equations. 1. 2(x+5)=3x+1 2. 3y−4=6−2y 3. 3(n+2)=9(6−n)

Mathematics

1 answer:

Anastasy [175]2 years ago

6 0

Answer:

1. x=9

2. y=2

3. n=4

hello just helping out!

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vladimir2022 [97]

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Let t = Time taken by Holly to clean alone.

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$\dfrac1t+\dfrac{1}{30}=\dfrac{1}{20}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{20}-\dfrac{1}{30}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3-2}{60}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{60}\\\\\Rightarrow\ t= 60$

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