25 x 33 + 25 x 87 + 64 x 73 + 64 x 47

= 25 x ( 33 + 87 ) + 64 x ( 73 + 47 )

= 25 x 120 + 64 x 120

=  120 x ( 15 + 64 )

= 120 x 49

= 5580

25 x 33 + 25 x 87 + 64 x 73 + 64 x 47

= 25 x ( 33 + 87 ) + 64 x ( 73 +47 )

= 25 x  120 + 64 x 120

= 120 x ( 25 + 64 )

= 120 x 89

= 10680

25 x 33 + 25 x 87 + 64 x 73 + 64 x 47

= ( 33 + 87 ) x 25 + ( 73 + 47 ) x 64

= 120 x 25 + 120 x 64

= ( 25 + 64 ) x 120

= 89 x 120

= 10680

@#$%^&* !

\(a.\left(-83\right)+302+83\\ =\left(-83+83\right)+302\\ =0+302\\ =302\\ b.14.\left(-7\right)-216:2\\ =-98-108\\ =-206\\ c.56.\left(-32\right)+\left(-68\right).56\\ =56.\left[\left(-32\right)+\left(-68\right)\right]\\ =57.\left(-100\right)\\ =-5700\\ d.2^3-6.\left[25-\left(33-28\right)^2\right]\\ =8-6\left[25-5^2\right]\\ =8-6\left[25-25\right]\\ =8-6.0\\ =8-0\\ =8\\ e.15.\left(-6\right)-420:\left(-4\right)\\ =-90-\left(-105\right)\\ =-90+105\\ =15\)

\(f.63.\left(-52\right)+\left(-48\right).63\\ =63.\left[\left(-52\right)+\left(-48\right)\right]\\ =63.\left(-100\right)\\ =-6300\)

=2457:27-(65-2.25).4

=91-15.4

=91-60

=31

\(2457:3^3-\left(65-2.5^2\right).2^2\\ =2457:27-\left(65-2.25\right).4\\ =91-\left(65-50\right).4\\ =91-15.4\\ =91-60\\ =31\)

a) (-37) + 14 + 26 + 37

= [(-37) + 37] + (14 + 26)

= 0 + 40 = 40

b) (-24) + 6 + 10 + 24

= [(-24) + 24] + (10 + 6)

= 0 + 16 = 16

c) 15 + 23 + (-25) + (-23)

= [15 + (-25)] + [23 + (-23)]

= (-10) + 0 = -10

d) 60 + 33 + (-50) + (-33)

= [60 + (-50)] + [33 + (-33)]

= 10 + 0 = 10

e) (-16) + (-209) + (-14) + 209

= [(-16)  + (-14)] + [(-209) + 209]

= (-30) + 0 = -30

f) \(-3^2+\left(-54\right)\div\left[\left(-2\right)^8+7\right]\times\left(-2\right)^2\\ =\left(-9\right)+\left(-54\right)\div263\times4\\ =\left(-9\right)+\dfrac{-216}{263}=\dfrac{-2583}{263}\)

a. \(\left[\left(-37\right)+37\right]+\left(14+16\right)\) = 30 

B. \(\left[\left(-24\right)+24\right]+\left(10+6\right)\) = 16

C. \(\left[\left(-23\right)+23\right]+\left(15-23\right)\)= -8

d. \(\left[33-33\right]+\left(60-50\right)\) = 10

e. \(\left(209-209\right)+\left(-16-14\right)\)= -30

Bài làm 

   ( 7² . 48 + 7² . 33 ) : 49

= 7² . ( 48 + 33 ) : 49

= 49 . 81 : 49 

= ( 49 : 49 ) . 81

= 1 . 81

= 81

# Học tốt #

a> 18.17-3.6.7

= 18.17-18.7

= 18 ( 17-7)

= 18.10 = 180

đi giải tiếp

giúp tớ với

A\(-73+\left(25-49+73\right)-\left(35-59\right)\)

\(=-73+\left(-24+73\right)-\left(-24\right)\)

\(=-73+49-\left(-24\right)\)

\(=-24-\left(-24\right)=0\)

B\(\left(-145+33\right)-\left(33-145\right)-17\)

\(=-112-\left(-112\right)-17=0-17=-17\)

Bài 1 theo như bạn Asuna làm

Bài 2 :

|x-1|=0

|x| = 0+1

|x| = 1

=> x = -1 hoặc 1

b) |x-1|=1

=> Các trường hợp

TH1 : x-1 = 1

x = 1+1

x = 2

TH2 : x-1 = -1

x = -1+1

x = 0

Vậy x = -1 hoặc 0

1a)-73+(25-49+73)-(35-59)

=-73+25-49+73-35+59

=(-73+73)+(25-35)+(-49+59)

=0-10+10=0

b)(-145+33)-(33-145)-17

=(33-145)-(33-145)-17=0-17=-17

2a)|x-1|=0 =>x-1=0 => x=1

b)|x-1|=1 =>x-1=1 hoặc x-1=-1 =>x=2 hoặc x=0

3393

18700

cau a kết quả bằ