i need help simplifying expressions, like 3 + 2x + -4x

jarrodj20

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Joined
Nov 7, 2006
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7
i need help simplifying expressions.
 

jonboy

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Jun 8, 2006
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Ok. We can't teach here, so please give us a specific example of something you're having trouble with. Remember to show what you've tried, so we can see where you're stuck. Thanks!
 

jarrodj20

New member
Joined
Nov 7, 2006
Messages
7
3 + 2x + -4x

this is what i think is the answer but i'm probably wrong:

3 + 2x + -4x
5x + -4x
1x
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,648
jarrodj20 said:
3 + 2x + -4x
this is what i think is the answer but i'm probably wrong:
3 + 2x + -4x
5x + -4x
1x
Jars, if you "see" that 5x + -4x = x, why can't you "see" that 2x + -4x = -2x ????

Answer is 3 - 2x

REMEMBER: 3 + 2x is NOT EQUAL to 5x :shock:
and
REMEMBER: pay attention in class :idea:
 

jarrodj20

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Nov 7, 2006
Messages
7
ok

thanks. i asked my teacher and now I know everything about like terms and combining them and using the properties.
 
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