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3 years ago

Solve this equation for x in terms of y: 3x+2y=4

Mathematics

2 answers:

evablogger [386]3 years ago

5 0

$3x+2y=4\\\\3x=4-2y\ /:3\\\\x= \frac{4}{3} - \frac{2}{3} y$

torisob [31]3 years ago

4 0

3x+2y=4
3x=4-2y

Answer: $x = \frac{4-2y}{3}$

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Seven pizzas are shared equally between three friends. What fraction of pizza does each friend get? Write your answer as a mixed

vredina [299]

Seven pizzas: 7 pizzas

Shared between 3 friends: 7 pizzas / 3 friends

Simplify the fraction:

7 / 3

(3 goes into 7 twice, 7 - 6 = 1)

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Then

$\begin{gathered} h\text{ = }\frac{kl}{w} \\ \text{where k is the constant of proportionality} \end{gathered}$ $\begin{gathered} \Rightarrow k=\frac{hw}{l} \\ \Rightarrow k=\frac{25\times5}{10}=12.5 \end{gathered}$ $\Rightarrow h=\frac{12.5l}{w}$

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That is l = 10m

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$\begin{gathered} \frac{50}{1}=\frac{12.5\times10}{w} \\ \Rightarrow\frac{50}{1}=\frac{125}{w} \\ \text{Cross multiplying, we have} \\ 50w\text{ = 125} \\ \Rightarrow\text{ w=}\frac{125}{50}=2.5 \end{gathered}$

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