Question

me ajudem pfvrr
a) (8-14):[(7-12)+(15-12].7
b) [-17+(11-16)] -{2-] (-2+7)•(25-20)
c) (5-2)• (2-5) • (-2) : (-3)
d) 12- {2•6+2 - [5•(6) : (-3) ] +34​

Answer 1

$a) ( 8-14 ) : [(7-12) + (15 - 12 )] . 7 = -6 : [ -5 + 3 ] . 7 = -6 : -2 . 7 =\\3 . 7 = 21\\\\b) [ -17 + (11 - 16 )][ 2 ] - ( -2 + 7 ) . ( 25 -20 ) = [-17 + ( -5 )] . 2 - ( + 5 ) . 5 = \\(-17 - 5 ) . 2 - 5 . 5 = -22 . 2 -5 . 5 = -44 - 25 = -69\\\\c) (5-2 ) . (2-5 ) . (-2) : (-3 ) = 3 . -3 . -2 : -3 = -9 . -2 : -3 = 18 : -3 = -6\\\\d) 12 - [ 2.6+2 ] - [ 5.6: -3 ] +34 = 12 - 14 - [ 30 : -3 ] + 34 = \\12-14 - [ -10 ] + 34 = 12-14 + 10 + 34 = -2 +44 = 42$