Question

calcule as expressoes
[40+2×(7-5)]×2-20=

Answer 1

[40 + 2 x (7 - 5)] x 2 - 20 =
[40 + 2 x 2] x 2 - 20 =
[40 + 4] x 2 - 20 =
44 x 2 - 20 =
88 - 20 = 
68