How do you simplify $2x+y-(9-4x)$ ?

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Answer 1 · 2015-11-03T15:07:15

$6x+y-9$
See explanation so that you can do others!

the minus in front of the bracket changes all the signs within the bracket to their opposite. So we end up with

$2x+y-(9-4x)" " ->" "2x+y-9+4x$
Now you group and work it all out

Grouping:

$(2x+4x) + (y) -(9)$

$6x+y-9$

Answer 2 · 2015-11-03T15:08:41

$=color(blue)(6x+y-9$

$2x+y-(9-4x)$

$=2x+y-9+4x$

$=2x+4x+y-9$

$=color(blue)(6x+y-9$

How do you simplify 2x+y-(9-4x)2x+y-(9-4x)?