Question

1) resolva as expressões
A) 17-45=
B) -23-32+19=
C)67-86+75=
D) -109+5•(-8)-(-29)=
E) 21:(3-10)+2•(66:11-13)=
F)-23-[-4-5+3•(2-4)-8]-(-25)=

(Preciso dos cálculos)

2) calcule o valor de:
A. 3+2-4
B. 12+5-8
C.7-3+5
D. 8-1+2
E.-3+5-2-9
F.7+8-6-4-3
G.-5+4-2-7+3
H.23-45-12+67
I.72-24-56+13
J.68-34-54+43
K.-27-35-68-98
L.(+10)•(-12)•(+1)•(-3)
M(-3)•(-2)•(-10)•(-2)
N(-2)•(-2)•(-2)•(-2)
O(+3)•(+3)•(-3)•(-3)
P(-1)•(-12)•(+57)

Answer 1

Explicação passo a passo:

1)

A) $17-45=-28$

B) $-23-32+19=-55+19=-36$

C) $67-86+75=-19+75=56$

D) $-109+5\left(-8\right)-\left(-29\right)=-109-40-\left(-29\right)=-120$

E) $21\div \left(3-10\right)+2\left(66\div \:11-13\right)=21\div \left(-7\right)+2\left(66\div \:11-13\right)=21\div \left(-7\right)+2\left(-7\right)=-3+2\left(-7\right)=-3-14=-17$

F) $-23-\left[-4-5+3\left(2-4\right)-8\right]-\left(-25\right)=-23-\left(-23\right)-\left(-25\right)=25$

2)

A. $3+2-4=5-4=1$

B. $12+5-8=17-8=9$

C. $7-3+5=4+5=9$

D. $8-1+2=7+2=9$

E. $-3+5-2-9=2-2-9=0-9=-9$

F. $7+8-6-4-3=15-6-4-3=9-4-3=5-3=2$

G. $-5+4-2-7+3=-1-2-7+3=-3-7+3=-10+3=-7$

H. $23-45-12+67=-22-12+67=-34+67=33$

I. $72-24-56+13=48-56+13=-8+13=5$

J. $68-34-54+43=34-54+43=-20+43=23$

K. $-27-35-68-98=-62-68-98=-130-98=-228$

L. $\left(10\right)\left(-12\right)\left(1\right)\left(-3\right)=-120\left(1\right)\left(-3\right)=-120\left(-3\right)=360$

M.$\left(-3\right)\left(-2\right)\left(-10\right)\left(-2\right)=6\left(-10\right)\left(-2\right)=-60\left(-2\right)=120$

N.$\left(-2\right)\left(-2\right)\left(-2\right)\left(-2\right)=4\left(-2\right)\left(-2\right)=-8\left(-2\right)=16$

O. $\left(3\right)\left(3\right)\left(-3\right)\left(-3\right)=9\left(-3\right)\left(-3\right)=-27\left(-3\right)=81$

P. $\left(-1\right)\left(-12\right)\left(57\right)=12\left(57\right)=684$