math(要例式)

Let x be the smaller number,
4x+(x+10)1/3=25
4x+x+10/3=25
13x+10/3=25
13x+10=25(3)
13x=75-10
x=65/13
x=5
Therefore,the smaller number is 5,large number is 15.

x = larger no.
y = smaller no.

x - y = 10
1/3x + 4y = 25

x = 10 + y

1/3(10+y) + 4y =25
10/3 + y/3 +4y = 25
y/3 + 4y = 25 - 10/3
(y + 12y)/3 = 75/3 - 10/3
13y/3 = 65/3
y = 5

x = 10 + y
x = 15

Let the smaller number is x.the large number is y.

large:1/3y=25
1/3ydivide1/3=25divide1/3y
y=75


smaller:4x=25
4x divide 4=25 divide 4
x=6 and 1 over 4

the smaller number is 6 and 1over 4,the large number is 75

Let the larger number be Y and the smaller number be Z.
Y-Z=10 -----------------1
1/3Y+4Z=25 -----------2
1 x 4: 4Y-4Z=40 ------3
3 + 2: 13/3Y=65
Y=15
Sub Y=15 into 1
15-Z=10
Z=5

設一個數是a, 則另一個數為 (a+10)

4a + (a+10)/3 = 25
12a + a +10 = 75
13a = 65
a = 5

a + 10
=15

答：兩個數為 5, 15。