Question

what is the solution of
3/5=x/15

Answer 1

x = .6 * 15
x = 9
I got .6 by converting 3/5 into decimal form

Answer 2

3/5=x/15
by cross multiplying
3x15=45
x x 5=5x
45/5x=
9
x=9

Answer 3

\(\Huge{\color{purple}{\textbf{W}} \color{orange}{\cal{E}} \color{green}{\mathbb{L}} \color{blue}{\mathsf{C}} \color{maroon}{\rm{O}} \color{red}{\tt{M}} \color{gold}{\tt{E}} \space \color{orchid}{\mathbf{T}} \color{Navy}{\mathsf{O}} \space \color{OrangeRed}{\boldsymbol{O}} \color{Olive}{\mathbf{P}} \color{Lime}{\textbf{E}} \color{DarkOrchid}{\mathsf{N}} \color{Tan}{\mathtt{S}} \color{magenta}{\mathbb{T}} \color{goldenrod}{\mathsf{U}} \color{ForestGreen}{\textbf{D}} \color{Salmon}{\mathsf{Y}} \ddot \smile }\)

You want to start off by seeing if there is any way to simplify your fractions.
\[\frac{3}{5} = \frac{x}{15} \]
Multiply the left fraction be 3
\[\frac{9}{15} = \frac{x}{15} \]
Your 16s cancel out!

You're left with \[9 = x \rightarrow x = 9\]