5x-3{4x-2[4x-3(5x-2)]}

= 5x - 3.[4x - 2(4x - 15x + 6)]

= 5x - 3.(4x - 8x + 30x - 12)

= 5x - 12x + 24x - 90x + 36

= -73x + 36 = 182

=> -73x = 182 - 36 = 146

=> x = 146 : (-73) = -2

\(VT=-\left(73x-36\right)\)

\(\Leftrightarrow-\left(73x-36\right)=182\)

\(\Leftrightarrow36-73x=182\)

\(\Leftrightarrow-73x=182-36\)

\(\Leftrightarrow-73x=146\)

\(\Leftrightarrow x=-2\)

5x -3 { 4x - 2 [ 4x - 3 (5x - 2)]} = 182 
<=> 5x -3 { 4x -2 [ 4x - 15x +6 ]} =182 
<=> 5x -3 { 4x -2 [ -11x +6 ]} =182 
<=> 5x -3 { 4x + 22x -12 } = 182 
<=> 5x -3 { 26x -12 } =182 
<=> 5x - 78x + 36 = 182 
<=> -73x = 146 
<=> x= -2

b) 5x -3 {4x-2 [4x-3.(5x-2)]} =182 <=> 5x - (12x -6 [4x-15x+6])=182 
<=> 5x - (12x-24x+90x-36)=182 <=> 5x-12x+24x-90x+36 =182 
-73x = 146 => x= -2 
 

5x - 3{4x - 2[4x - 3(5x - 2)]} = 5x - {12x - 6[4x - (15x - 6)]} = 5x - 12x + 6(6 - 11x) = 36 + 66x - 7x = 36 + 59x = 182

=> 59x = 182 - 36 = 146 => x = 146/59

Thực hiện phá ngoặc lần lượt và rút gọn VT = -73x + 36.

Giải phương trình -73x + 36 = 182 thu được x = -2.

5x - 3{4x - 2[4x - 3(5x - 2)]} = 5x - 12x + 6[4x - 3(5x - 2)] = -7x + 24x - 18(5x - 2) = 17x - 90x + 36 = -73x + 36 = 182

=> -73x = 182 - 36 = 146 => x = 146 : (-73) = -2

5x - 3{4x - 2[4x - 3(5x - 2)]} = 182

<=> 5x - 3[4x - 2(4x - 15x + 6)] = 182

<=> 5x - 3(4x - 8x + 30x - 12) = 182

<=>5x - 3(26x - 12) = 182

<=> 5x - 78x + 36 = 182

<=> - 73x = 182 - 36 = 146

<=> x = \(-\dfrac{146}{73}=-2\)

vậy x = -2

3,26 + 4/5 =?

làm nhanh lên giúp mình nhé

3,26+4/5=3,26+0,8=3,34

K cho mình cái

\(2\left(5x-8\right)-3\left(4x-5\right)=4\left(3x-4\right)+11\)

\(\Leftrightarrow10x-16-12x+15=12x+16+11\)

\(\Leftrightarrow-2x-1=12x+27\Leftrightarrow-14x-28=0\Leftrightarrow x=-2\)

#)Giải :

a)\(5x-3\left\{4x-2\left[4x-3\left(5x-2\right)\right]\right\}\)

\(\Leftrightarrow5x-3\left[4x-2\left(4x-15x+6\right)\right]\)

\(\Leftrightarrow5x-3\left(4x-8x+30x-12\right)\)

\(\Leftrightarrow5x-12x+24x-90x+36\)

\(\Leftrightarrow-73x+36=182\)

\(\Leftrightarrow-73x=146\)

\(\Leftrightarrow x=-2\)

dễ hơn ăn cơm sườn;

=5x -12x+45x -18=182

38x = 200

x= 200/38=100/19