Question

calcule a,2-17+3.b,71+6-40-5.c,75+81-10-16.d,40-32-7+10.e,17+30-21+6.f,13+6-1+5-20.g,60-40+15-20.h,50-(72+11-80)i,20-7+5.j,40-(16-11)k,15-5-3+6.l,20-7+5.m,40-16-11.n,(15-5)-(3+6). alguém pode me ajudar por favor

Answer 1

a) 2-17+3 = -15+3 = -12

b) 71+6-40-5=77-40-5 = 37-5= 32

c) 75+81-10-16= 156-10-16= 146-6= 140

d) 40-32-7+10=8-7+10=1+10=11

e)17+30-21+6=47-21+6=26+6=32

f)13+6-1+5-20=18+5-20= 3

g)60-40+15-20=35-20=15

h)50-(72+11-80)=50-(83-80)=50-3=47

i)20-7+5=13+5=18

j)40-(16-11)=40-5=35

k)15-5-3+6=7+6=13

l)20-7+5=13+5=18

m)40-16-11=24-11=13

n)(15-5)-(3+6)=10-9= 1