Question

$\frac{3}{5}x+\frac{7}{5}x=\frac{3}{8}$

Given the equation above, what is the value of 2$x$ ?

Answer 1

We want to find the values of 2x. We notice that we can multiply both side by 5 to get the desired quantity.

$\Rightarrow$ $5(\frac{3}{5}x+\frac{7}{5}x)=\frac{3}{8}\times 5$

$\Rightarrow$ $5\times \frac{3}{5}x+5\times \frac{7}{5}x=\frac{15}{8}$

$\Rightarrow$ $10x=\frac{15}{8}$

Divide both side by 5

$\frac{10x}{5}=\frac{\frac{15}{8}}{5}$

$\Rightarrow$ $2x=\frac{3}{8}$

Therefore, the value of $2x=\frac{3}{8}$