Question

Resolva:

[(1/3+5/12÷7/6+1/2)] x 3 - 2/5

Answer 1

[(1/3+5/12÷7/6+1/2)] x 3 - 2/5
[(1/3+35/72+1/2)] x 3 - 2/5

mmc (3,72,2) = 72
[(24/72 + 35/72 + 36/72)] x 3 - 2/5
[95/72] x 3 - 2/5
285/72 - 2/5
95/24 - 2/5

mmc(24,5) = 120

475/120 - 48/120
427/120