Question

URGENTE
Resolva as expressões
a) [(+2+3/2) . 15/3 + -1/8 : -3/4] . 12/19

b) (-7+3)² : (-2)³-(-2-7)² : (+27)

Answer 1

a) [(+2+1,5).5+(-0,125):(-0,75)].0,6815789

[(3,5).5+(+0,166)].0,6815789

[(17,5)+0,166].0,6815789

17,666.0,6815789

aproximadamente=12,040772

b) (-4)² :(-8)-(-9):(+27)

16:(-8)+9:(+27)

-2+0,333

aproximadamente=-1,667