Question

The sum of twice a number and 13 is 75

Answer 1

Greetings!

"The sum of twice a number and 13 is 75."...

Let's translate this into an equation:
$2x+13=75$
Solve for x:
Add -13 to both sides.
$(2x+13)+(-13)=(75)+(-13)$
Simplify.
$2x=62$
Divide both sides by 2.
$(2x)/2=(62)/2$
Simplify.
$x=31$

The variable is equal to 31.

Hope this helps.
-Benjamin