How do you solve 20x + 15x + 20( x - 1) + 15( x - 1) - 245?

1 Answer
Oct 29, 2017

look at the following :)

Explanation:

As there are brackets, we can first expend those brackets and group the like terms together.

20x+15x+20(x-1)+15(x-1)-245
=20x+15x+20x-20+15x-15-245
=70x-280

I'm not sure if you want to ask the following, but I just write it down in case you need this:

When the question is asking
20x+15x+20(x-1)+15(x-1)-245=0

we have the left side in the above, so:

70x-280=0
70x=280
x=4

Hope this can help you :)