a) \(x-1\frac{4}{5}=\frac{10}{5}\)

\(\Rightarrow x=2+1\frac{4}{5}=3\frac{4}{5}=\frac{19}{5}\)

b) \(5,85:x=26-25,5\)

\(\Leftrightarrow5,85:x=0,5\)

\(\Rightarrow x=5,85:0,5=11,7\)

c) \(151-\left(-2\right).\left(x-6\right)=2227:17=131\)

\(\Rightarrow\left(-2\right).\left(x-6\right)=151-131=20\)

\(\Rightarrow\left(x-6\right)=20:\left(-2\right)=-10\)

\(\Rightarrow x=-4\)

d) \(\frac{2}{3}-\frac{1}{3}x=\frac{1}{4}\)

\(\Rightarrow \frac{1}{3}x=\frac{2}{3}-\frac{1}{4}=\frac{5}{12}\)

\(\Rightarrow x=\frac{5}{12}:\frac{1}{3}=\frac{5}{4}\)

dấu chấm (.) là dấu nhân nhé

Ban co chac ket qua dung ko

\(151-2\times\left[x-6\right]=2227:17\)

\(151-2\times\left[x-6\right]=131\)

\(2\times\left[x-6\right]=151-131\)

\(2\times\left[x-6\right]=20\)

\(x-6=20:2\)

\(x-6=10\)

\(x=10+6\)

\(x=16\)

151-2x[x-6]=131

2x[x-6]=151-131

2x[x-6]=20

x-6=20:2

x-6=10

x=10+6

x=16

151 - 2 x ( x-6 ) = 2227 : 17

        2 x ( x-6 ) =   131

        2 x ( x-6 ) =  151 - 131

        2 x ( x-6 ) =    20

               x-6   = 20 : 2

               x - 6 =   10

               x     = 10 + 6

              x      =   16 

\(151-2\cdot\left(x-6\right)=2227:17\)

\(151-2\left(x-6\right)=131\)

\(2\left(x-6\right)=151-131\)

\(2\left(x-6\right)=20\)

\(x-6=20:2\)

\(x-6=10\)

\(x=10+6\)

\(x=16\)

Theo bài ra , ta có :

\(151-2\left(x-6\right)=2227:17\)

\(\Leftrightarrow151-2\left(x-6\right)=131\)

\(\Leftrightarrow2\left(x-6\right)=20\)

\(\Leftrightarrow x-6=10\)

\(\Leftrightarrow x=16\)

Vậy  \(x=16\)

151-2(x-6)=2227:17

151-2(x-6)=131

2(x-6)=20

x-6=20:2

x-6=10

x=16

151 - 2(x-6) = 2227 :17 = 131

2(x-6) = 151 - 131=20

x - 6 = 20 : 2=10

x = 10+6 =16

151-2.(x-6)=2227:17

151-2.(x-6)=131

2.(x-6)=151 - 131

2.(x-6)=20

x-6=20:2

x-6=10

x=10+6

x=16

\(151-2.\left(x-6\right)=2227:17\)

\(=151-2\cdot\left(x-6\right)=131\)

\(\Rightarrow2\cdot\left(x-6\right)=151-131=20\)

\(\Rightarrow x-6=20:2=10\)

\(\Rightarrow x=10+6=16\)

Ủng hộ mk vs nhơ!!!^_^^_^^_^

155 - 2.(x - 6) = \(\frac{2227}{17}\)

2.(x - 6)          = 155 - \(\frac{2227}{17}\)

x - 6               = 24 : 2

x                    = 12 + 6

x                    = 18

ai giup minh lam voi 

a) 100 - 7.(x-5) = 68

 7.(x - 5) = 100 - 68 = 32

    x - 5 = \(\frac{32}{7}\)

     x = \(\frac{32}{7}+5=\frac{67}{7}\)

b) 2(x-6)+2227:17=151

2( x -6) + 131 = 151

2 (x - 6) = 20

x - 6 = 20 : 2 = 10

x = 10 + 6 = 16

a) 11

b) 16

c) 3

d) 5

e) 36

f) 54

g) 5

a,\(2,5.16,27.4+7,3=16,27.10+7,3=162,7+7,3=170\)

b,\(8.6.10+4.25.12+3.16.31+2.34.24=48.10+48.25+48.31+48.34\)

\(=48.\left(10+25+31+34\right)=48.100=4800\)

c,\(78.31+78.24+78.17+22.72=78\left(31+24+17\right)+22.72=78.72+22.72\)

\(=72.\left(78+22\right)=72.100=7200\)

d,\(102.67-34.51=102.67-17.102=102.\left(67-17\right)=102.50=5100\)

đéo hiểu thì cút nhé đéo ai khiến m trả lời cả . ngu thì nói ngu đi đừng bày đặt t ghét nhất là cái loại như m đấy ạ 

Bài 2 

a, \(1-\left(12,5+x-4,25\right):21,75=0\)

\(=>21,75-12,5-x+4,25=0\)

\(=>13,5-x=0=>x=13,5\)

b,\(x.101-x+72.99+72=21050\)

\(=>100x+72.100=21050\)

\(=>100\left(x+72\right)=21050\)

\(=>x+72=210,5\)\(=>x=138,5\)

c,\(151-2\left(x-6\right)=2227:17\)

\(=>151-2\left(x-6\right)=131\)

\(=>2\left(x-6\right)=20\)

\(=>2x=32=>x=16\)

d,\(\left(x+4\right)+\left(x+6\right)+\left(x+8\right)+...+\left(x+26\right)=210\)\(=>12x+\left(4+6+8+...+26\right)=210\)

\(=>12x+180=210=>12x=30\)

\(=>x=\frac{30}{12}=\frac{15}{6}=\frac{5}{2}\)