Question

efectuar [30(5-3)+(5-3)(2-5)]-[(8-3)(8-4)]

Answer 1

[30(2)+(2)(-3)]-[(5)(4)]
[60-6]-[20]
54-20
34

Answer 2

 [30(5-3)+(5-3)(2-5)]-[(8-3)(8-4)]
 [30(2)+(2)(-3)]-[(5)(4)]
 [60+(-6)]-[20]
 [60-6]-[20]
 [54-20]
=34