-(-4)-(-5)+9=4+5+9=18

-(-4)-(-5) +9 

= 9 + 9 = 18

nha bạn  okiiiiiii......

a)17.85-15.17-120

=17.(85-17)-120

 =17.68-12

=1156-120

=1036

b)100:[30-(6-1)^ 2]

=100 :[30-5^ 2]

= 100:[30-25]

=100:5=20

c)/-10/+4+3.2^3+(-14)

=10+4+3.8 +(-14)

=14+24+(-14)

=[14 +(-14)]+24

=0+24=24

d)20-[30-(5-1)^ 2: 2]

=20-[30-4^2:2]

=20-[30-8]

=20-22=-2

e)80-(4.5^2-3.2^3)

= 80-(4.25-3.8)

=80-(4.25-3.2.4)

=80-4.(25-3.2)

= 80-4.19

= 80-76=4

g)35-{12-[-14+6-2)]}

=35 -{12-14-6+2}

=35-12+14+6-2

=23+14+6-2

=37+6-2

=43-2=41

a) 23/105

b) -1 va 55/108

2

a)>

b)<

thank

Viết cách tính ra giúp mìk nha!!!

\(-2+6-12+16-22+26-....-92+96\)

\(=4+4+....+4\)

\(=4.10\)

\(=40\)

Cảm ơn 😚😚😚😙

-5/7.3/26-5/14.23/13-2/7

= -5/7.3/26-5/7.1/2.23/13-2/7

= -5/7.3/26-5/7.23/26-2/7

= -5/7(3/23+23/26)-2/7

= -5/7-2/7

= -1

a) \(35\left(14-101\right)-14\left(35-10\right)\)

\(=35\cdot14-35\cdot101-14\cdot35+14\cdot10\)

\(=140-3535=-3395\)

b) \(5^2\cdot\left(-3\right)^3=25\cdot\left(-27\right)=-675\)

a,  35. ( 14 - 101 ) -  14 . ( 35 - 10 )
= 35 . 14 - 35 . 101 - 14 . 35 + 14 . 10

= 35 . 14 . ( - 35 . 101 - 14 . 10 )

= 490 . ( - 3535 - 140) 

= 490 . ( - 35675 ) 

~~ Tự tính nốt nhé

b, \(5^2.\left(-3\right)^3=25.\left(-27\right)\)= - 675

@@ Học tốt

Sai đề k??

(-4)²-15.(-6)-(-17)+3

= 16+90+17+3

=16+90+20=16+110=126

( -4 )²- 15 . ( -6 ) - ( - 17 ) + 3

= 16 - (- 90 ) + 17 + 3

= 106 + 20 

= 126

a) (-3) - (4-6)

= (-3) - (-2)

= -1

( - 3) - ( 4-6) = -1

A = [1104 - (25 . 8 + 40)] . 9 + 3¹⁶ : 3¹² + 17⁰ = [1104 - (200 + 40)] . 9 + 3^16-12 + 1 = (1104 - 240) . 9 + 3⁴ + 1

= 864 . 9 + 81 + 1 = 7776 + 82 = 7858