F.1 數學題 高手入 急急急急急急急急急急

2009-01-02 2:46 am
Express the following statements by using algebraic expressions:

(1)Subtract the sum of 3 and 2x from the product of y and z

(2)Divide the sum of x and 2y by the sum of y and 2z

(3)The difference of p minus q is divided by 2 times r

(4)Add 3c to the sum of a and the product of 2 and b

回答 (4)

2009-01-06 3:01 am
1.)yz-(3+2x)


2.)(x+2y)/(y+2z)



3.(p-q)/2r


4.a+2b+3c


oh my god...why don't you know?
2009-01-05 3:08 am
Add/plus =(+)
sum(e.g.=3+5=8)
minus/Subtract=(-)
difference(e.g.=12-9=3)
times=(*)
product(e.g.=3*4=12)
divided=(/)
division(e.g.=45/7=5)

1. yz-(3+2x)

2. (x+2y)/(y+2z)

3. p-(q/2r)

4. (a+2b)+3c
參考: me
2009-01-02 5:13 am
1. yz-(3+2x)

2. (x+2y)/(y+2z)

3. pq/2r

4. a+2b+3c
參考: 我自已
2009-01-02 2:57 am
1)yz-(3+2x)
2)(x+2y)/(y+2z)
3)(p-q)/2r
4)a+2b+3c


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