Question

Quanto é: 25+30{42%[(+7)X(-5)+29]}

Answer 1

25+30{42/100[-35+29]}=
25+30{42/100[-6]}=
25+30{-252/100}=
25-7560/100=
25-756/10=
250/100-756/100= 506/100=50,6

Answer 2

25 + 30 {42/100 [ (+ 7 ) x (-5) + 29 ] } = 
25 + 30 {42/100 [ -35 + 29 ] } = 
25 + 30 { 42/100 [-6 ] } = 
25 + 30 {42/100 - 6 } = 
25 + 30 { m.m.c = 100}
25 + 30 {42/100 -  600/100 } =
25 + 30 {-558/100} = 
25 - 16740/100 =
m.m.c = 100
2500/100 - 16740/100 = -14240/100 = -142,4