Question

calcule o valor de :

Answer 1

prontinho!!!! Aqui está a resposta

Answer 2

a)-1 - 1 - ( -1) +1 = -2+2=0

b)10x25 + 100x5 -1000= 250+500-1000=-250

c)4-5x2+10=4-10+10=4

d)3x0,25+4x0,5-1=0,75+2=2,75

e)2x(-1)-1-(-1)+2=-2-1+1+2=0