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What is the answer to 3y-y+5x+3-7x

label Algebra
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this is Algebra, I don't know how to do it! Please help me solve this problem step by step! It is p. 70 in the algebra math book. Please help it's hard! Please please please help help help meeee!!!!! It's to hard and I don't know the answer to the 

Oct 22nd, 2017

You can only add or subtract things that are alike. There are 3 different things here:

The x ,   The y,    The number

Your answer must have these three things

Re-arrange them but make sure you carry the sign in front of the number

   3y-y+5x+3-7x

= 3y-y+ 5x-7x +3

=3y -1y + 5x-7x +3  ( y is short for 1y)

=2y + -2x +3     ( 3-1 gives 2  and 5 -7 gives -2)

=2y -2x +3         (adding a negative is like subtracting)


Oct 3rd, 2014

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