Answer:
Step-by-step explanation:
4+2S=12+S
in the left side there is one triangle so its value is 4 and two square so its value is 2S because you don't know the value of the square.
In the right side, there is 3 Triangles and one square so its value is 12 (3*4)+S
So, S=8
how?
12+4=16
S=16/2=8
