请教三道数学题(英文的)(1) six less than a number is the same as five more than three times the number(2) four more than twice a number is seventeen(3) 15 less than the product of a number and 4 is equal to 3 times the sum of 8 and the n
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 15:29:43
![请教三道数学题(英文的)(1) six less than a number is the same as five more than three times the number(2) four more than twice a number is seventeen(3) 15 less than the product of a number and 4 is equal to 3 times the sum of 8 and the n](/uploads/image/z/1987643-11-3.jpg?t=%E8%AF%B7%E6%95%99%E4%B8%89%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E8%8B%B1%E6%96%87%E7%9A%84%EF%BC%89%281%29+six+less+than+a+number+is+the+same+as+five+more+than+three+times+the+number%282%29+four+more+than+twice+a+number+is+seventeen%283%29+15+less+than+the+product+of+a+number+and+4+is+equal+to+3+times+the+sum+of+8+and+the+n)
请教三道数学题(英文的)(1) six less than a number is the same as five more than three times the number(2) four more than twice a number is seventeen(3) 15 less than the product of a number and 4 is equal to 3 times the sum of 8 and the n
请教三道数学题(英文的)
(1) six less than a number is the same as five more than three times the number
(2) four more than twice a number is seventeen
(3) 15 less than the product of a number and 4 is equal to 3 times the sum of 8 and the number
希望可以把题意和解题方法讲明白一点
请教三道数学题(英文的)(1) six less than a number is the same as five more than three times the number(2) four more than twice a number is seventeen(3) 15 less than the product of a number and 4 is equal to 3 times the sum of 8 and the n
(1)设此number为x,根据题意有如下方程:3x+5=x-6,x=-5.5
给你解释下第一题题意吧,方程的前部分,即six less than a number,意思是比某数少6,即x-6,等号即is the same as,方程的后部分,即five more than three times the number,即比这个数的3倍还多5,即3x+5.列出方程可解得x.
(2)同上,4+2x=17,x=6.5
(3)同上,(4+x)-15=3(8+x),x=-17.5