Simplify the following expression: 2x - 4y + 3x² + 7y - 16x.

Solution:

An expression in math is a sentence with a minimum of two numbers/variables and at least one math operation in it. 

Let us understand how to write expressions.

A number is 6 more than half the other number, and the other number is x. This statement is written as x/2 + 6 in a mathematical expression. 

Simplifying the given expression:

2x - 4y + 3x² + 7y - 16x 

we get

3x² + 2x - 16x - 4y + 7y

3x² - 14x + 3y

x(3x - 14) + 3y

Simplify the following expression: 2x - 4y + 3x² + 7y - 16x

Summary:

The simplified expression of 2x - 4y + 3x² + 7y - 16x is x(3x - 14) + 3y