IF the sum of two consecutive even numbers is 86,find the two numbers.
〔Hints:The difference between two consecutive even numbers is 2.〕
Solution:Let the smaller number be x.Then the larger numbers will be_______________.
x + ______________ = 86
請幫我解譯和做
2007-08-08 5:45 am
回答 (3)
2007-08-08 5:59 am
✔ 最佳答案
如果兩個連續雙數的和是86, 請找出這兩個數。(提示: 兩個連續雙數相減的差是2)首先假設第一個雙數是x, 第二個雙數就係x+2, 因為我地假設左x 係雙數, 咁x+1 會係單數, for eg, if x=4(雙數), 咁x+1=4+1=5(單數), x+2=4+2=6(雙數),
如果x=10(雙), x+1=10+1=11(單), x+2=10+2=12(雙), 所以 連續雙數係x+2。
咁兩個數相加係86, 所以係:
x+(x+2)=86
跟住自己計la
2007-08-08 5:51 am
Let the smaller number be x.Then the larger number will be x +2 (because the difference between two consecutive even numbers is 2)
so x+(x+2) =86
2x +2 =86
2x= 84
x=42
so the smaller number is 42; nad the larger number is 42+2=44
so x+(x+2) =86
2x +2 =86
2x= 84
x=42
so the smaller number is 42; nad the larger number is 42+2=44
參考: me
2007-08-08 5:48 am
自己功課應該自己做，唔明就問老師啦！
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一來清楚，二來老師會覺得你好學
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