Question

Which expressionis equal to (-7x+5.1y)-(-9x+5.3y)

Answer 1

Answer:

The simplified expression for the given expression will be:

c. $2x-0.2y$

Step-by-step explanation:

Given expression:

$(-7x+5.1y)-(-9x+5.3y)$

To simplify the expression.

Solution:

In order to simplify the expression, we will first remove the parenthesis by reversing the signs of the terms inside the parenthesis which lies after a negative sign out side the parenthesis.

This is because negative multiplies to a negative to give a positive and negative multiplies to a positive to give a negative.

So, we have:

⇒ $-7x+5.1y+9x-5.3y$

Combining like terms

⇒ $-7x+9x+5.1y-5.3y$

The like terms can be evaluated as

$-7x+9x=2x$

$5.1y-5.3y=-0.2y$

Thus, the simplified expression will be:

⇒  $2x-0.2y$