01) Resolva as expressões numéricas:
1) 15 – (3-2)+(7-4)=
2) 25-(8-5+3)-(12-5-8)=
3) (10-2)-3+(8+7-5)=
4) (9-4+2)-1(9+5-3)=
5) 18-[2+(7-3-8)-10]=
6) -4+[-3+(-5+9-2)]=
7) -6-[10+(-8-3)-1]=
8) -8-[-2-(-12)+3]=
9) 25-{-2+[6+(-4-1)]}=
10) 17-{5-3+[8-(-1-3)+5]}=
11) 3-{-5-[8-2+(-5+9)]}=
12) -10-{-2+[+1-(-3-5)+3]}=
13) {2+[1+(-15-15)-2]}= 1
4) {30+[10-5+(-2-3)]-18-12=
15) 20+ {[7+5+(-9+7)+3]}=
16) -4-{2+[-3-(-1+7)]+2}=
17) 10-{-2+[+1+(+7-3)-2]+6}=
18) – {-2-[-3-(-5) +1]}=
19) -20-{-4-[-8+(+12-6-2)+2+3]}=
20) {[ (-50-10) +11+19]+20} +10=
Respostas
Resposta:Segue as contas abaixo na explicação
Explicação passo-a-passo:
1) 15 – (3-2)+(7-4)= 2) 25-(8-5+3)-(12-5-8)= 3) (10-2)-3+(8+7-5)=
15-(1)+(3) 25-(11-5)-(12-13) 8-3+(15-5)
15-1+3 25-(6)-(-1) 8-3+10
18-1 25-6+1 18-3
17 26-6 15
20
4) (9-4+2)-1(9+5-3)= 5) 18-[2+(7-3-8)-10]= 6) -4+[-3+(-5+9-2)]=
(11-4)-1.(14-3) 18-[2+(7-11)-10] -4+[-3+(-7+9)]
7-1.(11) 18-[2+(-4)-10] -4+[-3+(2)]
7-11 18-[2-4-10] -4+[-3+2]
-4 18-[2-14] -4+[-1]
18-[-12] -4-1
18+12 -5
30
7) -6-[10+(-8-3)-1]= 8) -8-[-2-(-12)+3]= 9) 25-{-2+[6+(-4-1)]}=
-6-[10+(-11)-1] -8-[-2+12+3] 25-{-2+[6+(-5)]}
-6-[10-11-1] -8-[-2+15] 25-{-2+[6-5]}
-6-[10-12] -8-[+13] 25-{-2+1}
-6-[-2] -8-13 25-{-1}
-6+2 -21 25+1
-4 26
10)17-{5-3+[8-(-1-3)+5]}= 11)3-{-5-[8-2+(-5+9)]}= 12)-10-{-2+[+1-(-3-5)+3]}=
17-{2+[8-(-4)+5]} 3-{-5-[6+(4)]} -10-{-2+[+1-(-8)+3]}
17-{2+[8+4+5]} 3-{-5-[6+4]} -10-{-2+[+1+8+3]}
17-{2+[17]} 3-{-5-[10]} -10-{-2+[12]}
17-{2+17} 3-{-5-10} -10-{-2+12}
17-{19} 3-{-15} -10-{10}
17-19 3+15 -10-10
-2 18 -20
13){2+[1+(-15-15)-2]}= 1 4){30+[10-5+(-2-3)]-18-12}= 15)20+ {[7+5+(-9+7)+3]}=
{2+[1+(-30)-2]} {30+[5+(-5)]-30} 20+{[12+(-2)+3]}
{2+[1-30-2]} {30+[5-5]-30} 20+{[12-2+3]}
{2+[1-32]} {30+0-30} 20+{[15-2]}
{2+[-31]} 0 20+{13}
{2-31} 20+13
-29 33
16)-4-{2+[-3-(-1+7)]+2}= 17)10-{-2+[+1+(+7-3)-2]+6}= 18)– {-2-[-3-(-5) +1]}=
-4-{2+[-3-(8)]+2} 10-{-2+[1+(4)-2]+6} -{-2-[-3+5+1]}
-4-{2+[-3-8]+2} 10-{-2+[1+4-2]+6} -{-2-[-3+6]}
-4-{2+[-11]+2} 10-{-2+[5-2]+6} -{-2-[3]}
-4-{2-11+2} 10-{-2+[3]+6} -{-2-3}
-4-{4-11} 10-{-2+3+6} -{-5}
-4-{-7} 10-{-2+9} 5
-4+7 10-{7}
3 10-7
3
19)-20-{-4-[-8+(+12-6-2)+2+3]}= 20){[ (-50-10) +11+19]+20} +10=
-20-{-4-[-8+(12-8)+5]} {[(-60)+30]+20}+10
-20-{-4-[-8+4+5]} {[-60+30]+20}+10
-20-{-4-[-8+9]} {[-30]+20}+10
-20-{-4-[1]} {-30+20}+10
-20-{-4-1} {-10}+10
-20-{-5} -10+10
-20+5 0
-15