There are three odd integers. the sum of the integer is -57. what is the smallest of the three integers

It is -21.
If x is an odd integer, then the next odd integer would be x + 2. (an example: 5 is an odd integer. The next odd integer is 5+2, or 7).

Based on this, we can make this equation and solve for x to find the
x + (x + 2) + (x + 4) = -57
x is the smallest integer, x+2 is the next odd integer, and x+4 is the third odd integer.
Now we can solve
Combining like terms
3x + 6 = -57
3x = -63
x = -21

Lenny is 3 times older then Max. When you subtract Max's age from Lenny's age, you get 24

Let the Lenny's age is L

Max's age is M

Lenny is 3 times older then Max

Lenny = 3 * Max

So L = 3M

When you subtract Max's age from Lenny's age, you get 24.

L - M = 24

Replace L with 3M

The equation  that represents the situation is

3M - M = 24

(b) Solve the equation

3M - M = 24

2M = 24 (Divide by 2)

M = 12

Max's age = 24

Lenny's age = 3 * 12 = 36

So Lenny's age is 36