Which equations are related equations to 13 + x = 29? select each correct answer. 29 + 13 = x 13=29−x x=29−13 13−x=29

Solve the given equation:
13 + x = 29
Subtract 13 from both sides:
x = 16

Now look at each choice and solve for x.

A. 29 + 13 = x
x = 42

B. 13 = 29 - x
-16 = -x
x = 16

C. x = 29 - 13
x = 16

D. 13 - x = 29
-x = 16
x = -16

Choices B and C have the same solution as the given equation, so choices B and C are equivalent to the given equation.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm