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Problem Solving?

Find each sum or difference
1) (7r+3s+)(4r+8s)
2) (2x6+3y)+(5x+6y)
3) (10x+12y)-(5x+7y)
4) (15a+4b)-(12a+3b)

2007-10-16 09:31:56 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

1 answers

1) (7r+3s+)(4r+8s) = 11r + 11s
2) (2x6+3y)+(5x+6y) = 2x^6 + 5x + 9y
3) (10x+12y)-(5x+7y) = 5x +19y
4) (15a+4b)-(12a+3b) = 3a +7b

2007-10-16 09:45:54 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋

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