2x=26+x-12
(26-12)+(x+5)=14-(2x-6)
( 26 - 12 )+( x + 5 ) = 14 - ( 2x - 6 )
14 + ( x + 5 ) = 14 - ( 2x - 6 )
=> x + 5 = 2x - 6
x = 2x - 6 - 5
x = 2x - 1
( 26 - 12 )+( x + 5 ) = 14 - ( 2x - 6 )
14 + x + 5 = 14 - 2x + 6
14 - 14 + x + 2x = -5 + 6
3x = 1
x =\(\frac{1}{3}\)
(26-12)+(x+5)=14-(2x-6)
=>14+x+5=14-2x+6
=>19+x=20-2x
=>19+3x=20
=>3x=1
=>x=1/3
tìm x(2x-14):12=26 cíu tui ạ
\(\left(2x-14\right):12=26\)
\(2x-14=26.12\)
\(2x-14=312\)
\(2x=312+14\)
\(2x=326\)
\(x=326:2\)
\(x=163\)
2x-14=26*12
2x-14=312
2x=312-14
2x=298
x= 298:2
x=149
a, x+(-14)=26 b, 4-x=(-12)+82
c, 2x+14=(-3)+(-15)
Mong mọi người giúp
a: x+(-14)=26
=>x-14=26
=>x=26+14=40
b: 4-x=(-12)+82
=>4-x=-12+64=52
=>x=4-52=-48
c: \(2x+14=\left(-3\right)+\left(-15\right)\)
=>2x+14=-3-15=-18
=>2x=-18-14=-32
=>x=-32/2=-16
a, x + (-14) = 26
=> x = 40
b, 4 - x = (-12) + 82
=> 4 - x = (-12) + 64 = 52
=> x = -48
c, 2x + 14 = (-3) + (-15)
=> 2x + 14 = -18
=> 2x = -32 => x = -16
a: x+(-14)=26
=>x-14=26
=>x=26+14=40
b: 4-x=(-12)+82
=>4-x=-12+64=52
=>x=4-52=-48
c: 2x+14=(−3)+(−15)2�+14=(−3)+(−15)
=>2x+14=-3-15=-18
=>2x=-18-14=-32
=>x=-32/2=-16
Bài 1: tìm x TRÌNH BÀY LUÔN
1) 2x+20=122
2) 26-2x=20
3) 5x+205=295
4) 75+12:x=81
5) 3x-7=14
6) 45:(12-x)=3
7) 172-2.(x-30)=94
8) (x+52)-27=54
9) 72:3(x-3)=6
10) 19-(4x+1)=10
1) \(x=51\)
2) \(x=3\)
3) \(x=18\)
4) \(x=2\)
5) \(x=7\)
tìm số nguyên x biết
a) -x/2+ 2x/3 + x+1/4 + 2x+1/6 = 3/8
b) 3/2x+1 + 10/4x+2 - 6/6x+3 = 12/26
a) \(\frac{-x}{2}+\frac{2x}{3}+x+\frac{1}{4}+2x+\frac{1}{6}=\frac{3}{8}.\)
\(\frac{-x}{2}+\frac{2x}{3}+3x+\frac{5}{12}=\frac{3}{8}\)
\(x.\left(-\frac{1}{2}+\frac{2}{3}+3\right)+\frac{5}{12}=\frac{3}{8}\)
\(x\cdot\frac{19}{6}=-\frac{1}{24}\)
x = -1/76
b) \(\frac{3}{2x+1}+\frac{10}{4x+2}-\frac{6}{6x+3}=\frac{12}{26}\)
\(\frac{3}{2x+1}+\frac{2.5}{2.\left(2x+1\right)}-\frac{2.3}{3.\left(2x+1\right)}=\frac{6}{13}\)
\(\frac{3}{2x+1}+\frac{5}{2x+1}-\frac{2}{2x+1}=\frac{6}{13}\)
\(\frac{3+5-2}{2x+1}=\frac{6}{13}\)
\(\frac{6}{2x+1}=\frac{6}{13}\)
=> 2x + 1 = 13
2x = 12
x = 6
Tìm số nguyên x, biết
a) \(-\dfrac{x}{2}+\dfrac{2x}{3}+\dfrac{x+1}{4}+\dfrac{2x+1}{6}=\dfrac{8}{3}\)
b) \(\dfrac{3}{2x+1}+\dfrac{10}{4x+2}-\dfrac{6}{6x+3}=\dfrac{12}{26}\)
\(a,-\dfrac{x}{2}+\dfrac{2x}{3}+\dfrac{x+1}{4}+\dfrac{2x+1}{6}=\dfrac{8}{3}\)
\(\Rightarrow-\dfrac{6x}{12}+\dfrac{8x}{12}+\dfrac{3\left(x+1\right)}{12}+\dfrac{2\left(2x+1\right)}{12}=\dfrac{8}{3}\)
\(\Rightarrow\dfrac{-6x+8x+3x+3+4x+2}{12}=\dfrac{8}{3}\)
\(\Rightarrow\dfrac{9x+5}{12}=\dfrac{8}{3}\)
\(\Rightarrow27x+15=96\)
\(\Rightarrow27x=81\)
\(\Rightarrow x=3\left(tm\right)\)
\(b,\dfrac{3}{2x+1}+\dfrac{10}{4x+2}-\dfrac{6}{6x+3}=\dfrac{12}{26}\)
\(\Rightarrow\dfrac{3}{2x+1}+\dfrac{10}{2\left(2x+1\right)}-\dfrac{6}{3\left(2x+1\right)}=\dfrac{6}{13}\)
\(\Rightarrow\dfrac{3}{2x+1}+\dfrac{5}{2x+1}-\dfrac{2}{2x+1}=\dfrac{6}{13}\)
\(\Rightarrow\dfrac{3+5-2}{2x+1}=\dfrac{6}{13}\)
\(\Rightarrow\dfrac{6}{2x+1}=\dfrac{6}{13}\)
\(\Rightarrow2x+1=13\)
\(\Rightarrow2x=12\)
\(\Rightarrow x=6\left(tm\right)\)
#Toru
a) \(-\dfrac{x}{2}+\dfrac{2x}{3}+\dfrac{x+1}{4}+\dfrac{2x+2}{6}=\dfrac{8}{3}\)
\(\Rightarrow\dfrac{-6x}{12}+\dfrac{8x}{12}+\dfrac{3\left(x+1\right)}{12}+\dfrac{2\left(2x+1\right)}{12}=\dfrac{4\cdot8}{12}\)
\(\Rightarrow-6x+8x+3x+3+4x+2=32\)
\(\Rightarrow9x+5=32\)
\(\Rightarrow9x=32-5\)
\(\Rightarrow9x=27\)
\(\Rightarrow x=\dfrac{27}{9}\)
\(\Rightarrow x=3\)
b) \(\dfrac{3}{2x+1}+\dfrac{10}{4x+2}-\dfrac{6}{6x+3}=\dfrac{12}{26}\) (ĐK: \(x\ne-\dfrac{1}{2}\))
\(\Rightarrow\dfrac{3}{2x+1}+\dfrac{10}{2\left(2x+1\right)}-\dfrac{6}{3\left(2x+1\right)}=\dfrac{6}{13}\)
\(\Rightarrow\dfrac{3}{2x+1}+\dfrac{5}{2x+1}-\dfrac{2}{2x+1}=\dfrac{6}{13}\)
\(\Rightarrow\dfrac{6}{2x+1}=\dfrac{6}{13}\)
\(\Rightarrow2x+1=13\)
\(\Rightarrow2x=12\)
\(\Rightarrow x=\dfrac{12}{2}\)
\(\Rightarrow x=6\left(tm\right)\)
Tìm x:
2x+8x:12+18y=26
Biết x+y=102
x=100.5188285 nha ai ra giống mik cho mik 1 k nha
Ê mà tớ giải hpt đó nha!! sai nhớ sửa lại dùm tớ!! -_-
\(x+y=102\Leftrightarrow y=102-x\)
\(thay\) \(y\)\(vào\)\(BT\)
\(2X+8X\div12+18Y=26\)
\(\Leftrightarrow2X+8X\div12+18\left(102-X\right)=26\)
\(\Leftrightarrow\)\(2X+\frac{8X}{12}+1836-18X=26\)
\(\Leftrightarrow24X+8X+22032-216X=312\)
\(\Leftrightarrow-184X=-21720\)
\(\Leftrightarrow X\approx118\)
Tim x
a) ( 12-3x ) :20 =0
b) ( 2x-26 ) : 12 = 25
c) 234 : (5 x + 28 ) = 3
d) 529 : ( 72-7x ) = 23
a) 12-3x=0
3x=12-0
3x=12
x=12:3
x=4
b)2x-26=25.12
2x-26=300
2x=300+26
2x=326
x=326:2
x=163
c)5x+28=234:3
5x+28=78
5x=78-28
5x=50
x=50:5
x=10
d)72-7x=529:23
72-7x=23
7x=72-23
7x=49
x=49:7
x=7
k cho mình nhoa~~
a, (12-3x):20=0
=> 12-3x=0
=> 3x=12
=> x= 4 Vậy x=4
b, (2x-26):12=25
=> 2x-26=300
=> 2x=326
=> x=163 Vậy x= 163
c, 234:( 5x+28)=3
=> 5x+28=78
=> 5x=50
=> x= 10 Vậy x= 10
d, 529: (72-7x)=23
=> 72-7x=23
=> 7x=49
=> x= 7 Vậy x= 7
Nhớ k cho mik nhé!!!! CẢM ƠN !!!
Tìm x thuộc Z
a, ( x - 12 ) - ( 2x + 31 ) = - 6 - 5
b, - 2 ( x + 7 ) + 3 ( x - 2 ) = - 2
c, - 7 - 2x = - 37 - ( - 26 )
d, ( 3x + 9 ) ( 11 - x ) = 0
a) x - 12 - 2x - 32 = -11
-x - 44 = -11
-x = 33
x = -33
a/ (x-12)-(2x+31)=-6-5
x-12-2x-31=-11
-x=(-11)+43
-x=32
=> x=-32
a/ (x-12)-(2x+31)=-6-5
x-12-2x-31=-11
-x=(-11)+43
-x=32
=> x=-32