Question

simplify:

5x-(7x+7y)

Answer 1

First remove the brackets. To do this, multiply each term inside the brackets by -1. Please post the result.

Answer 2

So it is

5x-7x+7y

Answer 3

Not quite. What is
\[7y \times -1\]

Answer 4

7xy-1?

Answer 5

oh is that a multiplication sign?

Answer 6

Not really. If you multiply 7y by negative 1 the result is negative 7y:
\[7y \times-1=-7y\]

Answer 7

ok that makes sense

Answer 8

So when the brackets are removed the result is:
\[5x-(7x+7y)=5x-7x-7y\]
Now you need to add the terms in x, taking care to observe the signs. Can you do that?

Answer 9

ok so then you would get -2x-7y

Answer 10

Correct! Good work.

Answer 11

Thank you :)

Answer 12

You're welcome :)