Respuesta :

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

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