Respuesta :

The answer is 4.
Here's how to solve it.

Remove parentheses: 
=20 × 7/35
7/35 = 1/5

Cancel the common factor 7:
=1/5
=20 × 1/5

Multiply fractions:
1·20/5

Simplify:
20/5

Divide
20/5=4

Hope this helped! :)