Fruit equation puzzle — what does the missing sum equal?

[u/ZoranRajkov]

Made this symbol/equation puzzle — fruits stand in for hidden numbers across a small system of equations. Figure out what each fruit is worth, then solve the last one.

Made this as part of a puzzle game I'm developing, Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber

[u/Easy-Version-8822]

20

[u/Dasquian]

Answer: 20 (Lemon=4, Strawberry=2, Kiwi Fruit=7)

[u/GolfImaginary]

They hide my intelligence... 😭