John has 8 cm pieces of toy train track and tom has 18 cm pieces of train track. how many of each
piece would each child need to build tracks that are equal in length?

13cm each.

Step-by-step explanation:

8cm +18 cm=26cm

26/2

=13cm

9 and 4

Step-by-step explanation:

LCM of 8 and 18 is 72

John needs 9 pieces build a track of 72 cm while Tom needs 4 pieces to build track of same length.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.