Question

1. Solve for x*
8
7.5

Answer 1

Answer:

x = 3  

Step-by-step explanation:

$\begin{array}{rcll }\dfrac{x}{8} & = & \dfrac{7.5}{20} &\\\\x & = & 8\times \dfrac{7.5}{20}&\text{Multiplied each side by 8}\\\\ & = & \dfrac{60}{20} & \text{Simplified}\\\\ & = & \mathbf{3} & \text{Cancelled the 20s}\\\end{array}$

Check:

$\begin{array}{rcl}\dfrac{3}{8} & = & \dfrac{7.5}{20 }\\\\0.375 & = & 0.375\\\end{array}$

It checks.