Question

Twice a number increased by 7 is 35 . find the number

Answer 1

Hello there. To solve this question, we'll have to remember how to translate a statement to a mathematical equation and then solve the equation for a number.

Twice a number increased by 7 is 35. We want to find that number.

In this case, say this number is n.

Twice this number is the same as multiplying this number by 2, hence

$2n$

Now increasing it by 7 is the same as adding 7 to the expression, therefore

$2n+7$

And this must be equal to 35

$2n+7=35$

Now we have to solve this equation for n.

Subtract 7 on both sides of the equation

$2n=28$

Divide both sides of the equation by a factor of 2

$n=14$

This is the number we're looking for.