combine like terms?
2(12r - 5) - 3r + 4(w+3)
simplify expression?
-2(4+5y)-5x+2y
and what does this mean?
commutative property of addition.
tnks and plz dont make fun
2007-09-16 03:09:54 · 2 answers · asked by DarK AngeL 2 in Science & Mathematics ➔ Mathematics
Combining like terms just means that all the terms containing an r can be combined and all the terms containing a w can be combined. It's basic to simplifying an expression.
Commutative property of addition is that a+b = b+a (order is unimportant). This kinda seems like 'horse-sense', but there are many systems in which addition is -not- commutative (try adding socks and shoes to your feet in reverse order ☺)
HTH
Doug
2007-09-16 03:29:33 · answer #1 · answered by doug_donaghue 7 · 2⤊ 0⤋
24 r - 10 - 3r +4w + 12
21r + 4w + 2 = 0
- 8 - 10 y - 5x + 2y
- 8y - 5x - 8
8y + 5x + 8 = 0
2007-09-16 03:16:59 · answer #2 · answered by 4 · 0⤊ 0⤋