THE sum of three consecutive number is 63.find the three number.
when 1over 9 of B minus 6 ,the difference is 10 .find B
given that the sum of 4times A and 11 is 143,find A
中1數學一問!!!寫埋步驟,,解答者,,萬分感激~10分
2007-10-05 3:55 am
回答 (1)
2007-10-05 4:19 am
✔ 最佳答案
consecutive number係連續數eg.1,2,3sum係加
difference係差距
times係乘
1.Let x be the first number,(x+1)be the second number,(x+2)be the third number.
x+(x+1)+(x+2)=63
3x+3=63
3x=60
x=20
so,the three consecutive number are 20,21 and 22 respectively.
2. (1/9)B-6=10
(1/9)B=16
B=16 x9
B=144.
3.4A+11=143
4A=132
A=33.
參考: 自己
收錄日期: 2021-04-13 14:51:09
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