標題:
簡單數學一題
發問:
the cost of a book is $(a+1)and that of a pen is $(a+2).if the total cost of the total cost of the book and the pen is $33,what is the value of a?
最佳解答:
(a+1)+(a+2)=33 a+1+a+2=33 2a+3=33 2a=30 a=15 Therefore the value of a is equal to 15.
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其他解答:
(a+1)+(a+2)=33 a+1+a+2=33 2a+3=33 2a+3-3=33-3 2a/2=30/2 a=15|||||(a+1)+(a+2)=33 a=? (?+1)+(?+2)=33 (15+1)+(15+2)=33 16+17=33 a=15 2007-11-02 15:27:35 補充： 15 15+ 3___ 33|||||(a+1)+(a+2)=33 a+1+a+2 =33 2a+3 =33 2a=30 a=15|||||The value of a is: (a+1)+(a+2)=33 a+1+a+2=33 2a+3=33 2a+3-3=33-3 2a=30 2a/2=30/2 a=5|||||(a+1)+(a+2)=33 a=15|||||(a+1)+(a+2)=33 a+1+a+2=33 2a+3=33 2a+3-3=33-3 2a/2=30/2 a=15|||||(a+1)+(a+2) =33 2a+3=33 2a+3-3=33-3 2a=30 2a÷2=30÷2 a=15|||||It is very easy! It is fifteen!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!|||||the value of a: $(2a+3)=$33
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