Tìm x biết: 5x-3{4x-2[4x-3(5x-2)]}=182
Tìm x biết :
5x-3{4x-2[4x-3(5x-2)]}=182
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
Tìm x biết :
5x-3{4x-2[4x-3(5x-2)]}=182
Mình nghĩ là vậy :
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
\(VT=-\left(73x-36\right)\)
\(\Leftrightarrow-\left(73x-36\right)=182\)
\(\Leftrightarrow36-73x=182\)
\(\Leftrightarrow-73x=182-36\)
\(\Leftrightarrow-73x=146\)
\(\Leftrightarrow x=-2\)
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tìm x biết
5x-3(4x-2(4x-3(5x-2)))=182
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
Tìm x , biết
5x-3{4x-2[4x-3(5x-2]}=182
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
Tìm x, biết:
5 x - 3 4 x - 2 [ 4 x - 3 ( 5 x - 2 ) ] = 182 .
Thực hiện phá ngoặc lần lượt và rút gọn VT = -73x + 36.
Giải phương trình -73x + 36 = 182 thu được x = -2.
Tìm x :
5x-3(4x-2(4x-3(5x-2)))=182
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
Tìm x biết:
a) 4(18-5x) - 12(3x-7) = 15(2x-16) - 6(x+14)
b) 5(3x+5) - 4(2x-3) = 5x+3(2x+12)+1
c)2(5x-8) - 3(4x-5) = 4(3x-4) + 11
d) 5x-3 {4x-2 [4x-3(5x-2)]}=182
3,26 + 4/5 =?
làm nhanh lên giúp mình nhé
3,26+4/5=3,26+0,8=3,34
K cho mình cái
\(2\left(5x-8\right)-3\left(4x-5\right)=4\left(3x-4\right)+11\)
\(\Leftrightarrow10x-16-12x+15=12x+16+11\)
\(\Leftrightarrow-2x-1=12x+27\Leftrightarrow-14x-28=0\Leftrightarrow x=-2\)
Tìm x, biết
a) 5x-3{4x-2[4x-3(5x-2)]}=182
b)(x2+2x+4).(2-x)+x.(x-3).(x+4)-x2+24=0
#)Giải :
a)\(5x-3\left\{4x-2\left[4x-3\left(5x-2\right)\right]\right\}\)
\(\Leftrightarrow5x-3\left[4x-2\left(4x-15x+6\right)\right]\)
\(\Leftrightarrow5x-3\left(4x-8x+30x-12\right)\)
\(\Leftrightarrow5x-12x+24x-90x+36\)
\(\Leftrightarrow-73x+36=182\)
\(\Leftrightarrow-73x=146\)
\(\Leftrightarrow x=-2\)
tìm x biết:
\(5x-3\left\{4x-\left[4x-3\left(5x-2\right)\right]\right\}=182\)
dễ hơn ăn cơm sườn;
=5x -12x+45x -18=182
38x = 200
x= 200/38=100/19