Find the two numbers . State the smallest number?

7

Step-by-step explanation:

x+y=30

x-y=16

2x=14

therefore x=7 and y=23.

the smallest number is 7.

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Step-by-step explanation:

Let x be the smallest number

According to the question,

(Let the two numbers be x and y)

x+y=30

= x=30-y

Now,

y-x=16

= y=16+30-y

= 2y=46

= y =23

Also,

x=30-23

= 7

The value of the smallest number is 7

The other number is 23

Leg 1 : 11
Leg 2 : 11
Leg 3 : 8

11 + 11 + 8 = 30

This can be determined using this equation:

30 = 2(x+3) + x

Solving:

30 = (x+3) + (x+3) + x
30 = 3x + 6
24 = 3x
/3     /3
  8 = x

Leg 1: 8 (x) + 3 = 11
Leg 2: 8 (x) + 3 = 11
Base = 8