How do you add $-2x+6-(x-3)$ ?

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Answer 1 · 2018-03-26T00:46:50

$-3x+9$

In this question, it is important to recognize that the minus sign in front of $-(x-3)$ applies to both $x$ and $-3$ .

Let's remove the parentheses by distributing the minus sign to the terms inside them:

$-2x+6color(red)(-)(x-3)$

$rArr-2x+6color(red)(-)xcolor(red)(-)(-3)$

$rArr-2x+6-x+3$

Now we can combine similar terms:

$rArr(-2x-x)+(6+3)$

$rArr-3x+9$

Answer 2 · 2018-03-26T00:49:51

$-3x+9$

You have to use PEMDAS and know that parentheses are always done before anything else.

So you have to distribute the $-$ to $x-3$ , which equals $-x+3$ . Then you open the parenthesis and add or subtract like terms.

$-2x+6-x+3$

which turns into

$-3x+9$

How do you add -2x+6-(x-3)-2x+6-(x-3)?