dài quá ko làm nha!!!

a=32 x 56 x 34-35 x 11

a=1792 x 34-385

a=60928-385

a=60543

a=32x56x34-35x11

a=1792x34-35x11

a=60928-385

a=60543

a=60 543

Câu 1: \(\frac{17}{51}\)x \(\frac{45}{30}\)= \(\frac{1}{3}\)x \(\frac{3}{2}\)

                                   = \(\frac{1}{2}\).

Câu 2: \(\frac{24}{15}\)x \(\frac{56}{72}\)x \(\frac{10}{14}\)= \(\frac{8}{5}\)x \(\frac{7}{9}\)x \(\frac{5}{7}\)

                                                 = \(\frac{56}{45}\)x \(\frac{5}{7}\)

                                                 = \(\frac{8}{9}\)

Câu 3: \(\frac{32}{48}\times\frac{35}{21}\times\frac{63}{14}\times\frac{9}{30}=\frac{2}{3}\times\frac{5}{3}\times\frac{9}{2}\times\frac{3}{10}=\frac{3}{2}\)

k nha

a)17/51x45/40=1/3x3/2=3/6=1/2

b)24/15x56/72x10/14=8/5x7/9x5/7=8/9

c)32/48x35/21x63/14x9/30=2/3x5/3x9/2x3/10=3/2

x x 134 -x x24 -x x 10 = x x ( 134 - 24 - 10)

x = x x 100

x = 1300 : 100

x = 13

Tìm x biết:

     56 : 49 = (-32) : x

-> (-32) : x = 56 : 49

    (-32) : x = \(\dfrac{8}{7}\)

               x = \(\left(-32\right):\dfrac{8}{7}\)

               x = -28

Ta có: \(56:49=-32:x\)

\(\Leftrightarrow-32:x=\dfrac{56}{49}=\dfrac{8}{7}\)

\(\Leftrightarrow x=-32:\dfrac{8}{7}=-32\cdot\dfrac{7}{8}=-28\)

Vậy: x=-28

1)\(\left(x-280\right):35=56.5\)

\(\left(x-280\right):35=280\)

\(x-280=280.35\)

\(x-280=9800\)

\(x=9800+280\)

\(x=10080\)

2) \(\left(x-128+20\right):192=0\)

\(\Rightarrow\left(x-148\right):192=0\)

\(\Rightarrow x-148=0\)

\(\Rightarrow x=0+148\)

\(\Rightarrow x=148\)

3) \(460+85.4=\left(x+200\right).4\)

\(\Rightarrow\left(x+200\right).4=460+340\)

\(\Rightarrow\left(x+200\right).4=800\)

\(\Rightarrow x+200=800:4=200\)

\(\Rightarrow x+200=200\)

\(\Rightarrow x=200-200=0\)

4) \(x+5.2-\left(32+16.3:16-15\right)=0\)

\(\Rightarrow x+10-\left(32+3-15\right)=0\)

\(\Rightarrow x+10-20=0\)

\(\Rightarrow x+10=20\)

\(\Rightarrow x=20-10=10\)

nha m.n

a) 17 + x=13

=> x=17-13

=> x=4

b) x-25=-18

=>x=-18+25

=>x=7

c) -32-x=-36

=>x=36-32

=> x=4

d) x+78=-56

=> x=-56-78

x=-134

a) \(17+x=13\)

\(\Rightarrow x=13-17\)

\(\Rightarrow x=-4\)

Vậy x = -4

b) \(x-25=-18\)

\(\Rightarrow x=-18+25\)

\(\Rightarrow x=7\) _ Vậy x = 7

c) \(-32-x=-36\)

\(\Rightarrow x=-32-\left(-36\right)\)

\(\Rightarrow x=4\)_Vậy x = 4

d) \(x+78=-56\)

\(\Rightarrow x=-56-78\)

\(\Rightarrow x=-134\)

Vậy x = -134

h,450:(x-19)=50                        i,135-5(x+4)=35

           x-19=450:50                               5(x+4)=135-35

            x-19=9                                        5(x+4)=100                    

            x      =9+19                                    x+4=100:5

            x     = 28                                        x+4=20      

                                                                  x     =20-4=16

x+35=56

x=56-35

x=21

x + 35 = 56

        x = 56 - 35

        x = 21

x=56-35

x=21

kb nhé