Three times a number is the same as the difference of twice the number and seven. find the number.

To solve this verbal equation, first we need to convert it into an written equation using integers and variables.

3n=2n-7

N is the variable for "the number".

We are trying to get the variable on one side of the equation to solve it.
So, we need to subtract 2n from both sides, which results in the equation

n= -7 

"The number" is -7.

Dis the correct answer

D. triangular pyramid