Question

resolva as seguintes operações
A )-1.+2+3.-+3+5 .-3
B)-8.+3+2.-5+1+3 -4
C)+2+1+3.-4+6.4+2÷1
D)1+2+3 .-4+3+1
E)+2+1-3.+2÷+1
​

Answer 1

a) -1×2+3×(-3)+5×(-3)

= -2+(-9)+(-15)

= -2-9-15

= -11-15

= -26

b) -8×3+2×(-5)+1+3-4

= -24-10+4-4

= -34+0

= -34

c) 2+1+3×(-4)+6×4+2÷1

= 2+1-12+24+2

= 3-12+26

= -9+26

= 17

d) 1+2+3×(-4)+3+1

= 1+2-12+4

= 3-12+4

= -9+4

= -5

e) 2+1-3×2÷1

= 2+1-6÷1

= 2+1-6

= 3-6

= -3