Question

resolver
a. 3(2-1)-1= 2(2)
b. 3(4-1)-1= 2(4)

Answer 1

a. 3 (2 - 1) - 1 = 2 (2)
    3 (1) - 1 = 4
    3-1 = 4
     4 = 4

b. 3 (4 - 1) - 1 = 2 (4)
    3 (3) -1 = 8
    9 -1 = 8
     8 = 8