[急][10分]中一的數學

1. Let the smallest number be a.
a+a+2+a+4=57
3a+6=57
3a=57-6
a=17
The three number is 17,19,21.
2. Let the number be a.
6+6a =6^2
6+6a =36
6a =30
a=5
The number is 5.

1. The sum of three consecutive odd numbers is 57, find the three numbers.

2. The sum of 6 and the product of 6 and a number is equal to the square of 6. Find the number.

1. let the smallest number be y, the other numbers are y+2, y+4
y + y + 2 + y + 4 = 57
y = 17

2. let the number be m
6+6m =6^2
m =5