on the right side there are 3 pink and 3 blue

on the left side, there are 2 pink and 3 blue plus 5 green

Therefore the 5 green are equivalent to 1 pink.

On the bottom left, we can see that 1 pink = 2 green + 1 blue

so since 1 pink is 5 green and also 2 green + 1 blue,

5 green = 2 green + 1 blue

so 3 green = 1 blue or 1 blue = 3 green

Looking at the right hand side, we have 3 blue + 3 pink = 1/2(144)

If we replace blue and pnk in terms of green,

3 (3 green) + 3 (5 green) = 72

9 green + 15 green = 72

24 green = 72

1 green = 3

1 blue = 3 green = 3(3) = 9

1 pink = 5 green = 5(3) = 15

Thanks to https://solveme.edc.org/mobiles/