osnomu3

2021-12-16

The solution of the proportion $\frac{r}{8}=\frac{25}{40}$

Karen Robbins

Calculation:
In order to solve the given equation $\frac{r}{8}=\frac{25}{40}$ for the variable, isolate the variable term r on one side by performing some basic algebraic operations to get rid of the other numbers and terms associated with it.
Here to isolate r on both side, first multiply both sides by 8 and then multiply both sides by 40 and then simplify further as shown below,
$\frac{r}{8}=\frac{25}{40}$
$\frac{r}{8}\cdot 8=\frac{25}{40}\cdot 8$
$r=\frac{200}{40}$
$r=5$
Thus, the solution of the proportion is $r=5$.

Dabanka4v

Step 1
$\frac{r}{8}=\frac{25}{40}$
Multiply both sides of the equation by 40, the least common multiple of 8, 40.
$5r=25$
Divide both sides by 5.
$r=\frac{25}{5}$
Divide 25 by 5 to get 5.
$r=5$

nick1337

For the equation
$\frac{r}{8}=\frac{25}{40}$
The cross product is
$r×40=8×25$
Solving for r
$r=\frac{8×25}{40}$
and reducing
$r=5$

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