Question

Resolva Por Dois Metodos Diferentes Cada Uma Das Expressões.

a) 30-(6 - 1)

b) 15 + ( 3 + 7)

c) - 6 - (3 + 2)

d) 18 - ( - 5 -2 -3)

e) 4 + ( 3 - 5) + ( - 2 - 6)

f) 20 - (-6 + 8) - (-1 + 3)

g) 35 + (-3) - (-4 + 7 + 2)

h) 8 + (3 - 10) - (- 3 + 5 - 20 )

Answer 1

a) 30-(6-1)= 30-5=25 / 30(6-1)=30-6+1=25

b) 15+(3+7)= 15+10=25 / 15+3+7=25

c) -6-(3+2) = -6-5= -11 / -6-(3+2) = -6-3-2= -11

d) 18 - ( - 5 -2 -3)= 18- (-10)= 18+10= 28 / 18+5+2+3=28

e) 4 + ( 3 - 5) + ( - 2 - 6)= 4+(-2)+(-8)=4-2-8= -6 / 4 + ( 3 - 5) + ( - 2 - 6)= 4+3-5-2-6= -6

f) 20 - (-6 + 8) - (-1 + 3)= 20-(2)-(2)=16 / 20 - (-6 + 8) - (-1 + 3)= 20+6-8+1-3= 16

g)35 + (-3) - (-4 + 7 + 2)= 35-3-(5)=35-3-5= 27 / 35-3+4-7-2= 27

h)8 + (3 - 10) - (- 3 + 5 - 20 )= 8+(-7)-(-18)= 1+18= 19 / 8+3-10+3-5+20= 19