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\(2\left(x-1\right)+3\left(3x-2\right)=x-4\)
\(2x-2+9x-6=x-4\)
\(2x+9x-x-2-6=-4\)
\(10x-2-6=-4\)
\(10x-2=2\)
\(10x=4\)
\(x=\frac{2}{5}\)
Vậy \(x=\frac{2}{5}\)
\(3\left(4-x\right)-2\left(x-1\right)=x+20\)
\(12-3x-2x+2=x+20\)
\(12-5x+2=x+20\)
\(12-5x-x+2=20\)
\(12-6x+2=20\)
\(12-6x=18\)
\(6x=-6\)
\(x=-1\)
Vậy \(x=-1.\)
\(4\left(2x+7\right)-3\left(3x-2\right)=24\)
\(8x+28-9x+6=24\)
\(8x-9x+28+6=24\)
\(-x+34=24\)
\(-x=-10\)
\(x=10\)
Vậy \(x=10\)
\(3\left(x-2\right)+2x=10\)
\(3x-6+2x=10\)
\(3x+2x-6=10\)
\(5x=16\)
\(x=\frac{16}{5}\)
Vậy \(x=\frac{16}{5}\)
2(x-1)+3(3x-2)=x-4
=>2x-2=9x-6-x+4=0
=>10x-4=0
=>x=\(\frac{2}{5}\)
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a) 4(2x+7)-3(3x-2)=24
8x+28-9x-6=24
(8x-9x)+(28-6)=24
(-1)x+22=24
(-1)x=24-22=2
x=2:(-1)=-2
b) -2(x+3)+(-4)2=3(1-x)
(-2)x+(-6)+16=3-3x
(-2)x+(-6)+16+3x=3
[(-2)x+3x]+[(-6)+16]=3
x+10=3
x=3-10=-7
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a) \(\Rightarrow x=2021-2006=15\)
b) \(\Rightarrow2x-2016=64\Rightarrow2x=2016+64=2080\Rightarrow x=1040\)
c) \(\Rightarrow\left(2x+1\right)^3=81:3=27\Rightarrow2x+1=3\)
\(\Rightarrow2x=3-1=2\Rightarrow x=1\)
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a. -1-(5-x)=-3
5-x=(-1)-(-3)
5-x=2
x=5-2
x=3
b. 132-(x+5)=-24
x+5=132-(-24)
x+5=156
x=156-5
x=151
c. 3.(x-2)+2x-15=-1
3x-6+2x-15=-1
3x+(-6)+2x+(-15)=-1
5x+(-21)=-1
5x=(-1)-(-21)
5x=20
x=20:5
x=4
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a) -15+2x= ( -2) 4-1
=> -15 + 2x = 16-1
=> -16 +2x = 15
=> 2x= 15-(-16 )
=> 2x = 31
=> x= 31:2
=> x= 15,5
Vậy x = 15,5
b) -27+24:x=(-3)3+3
=> -27+24:x=27+3
=> -27+24:x=30
=> 24:x= 30 - (-27 )
=> 24:x=57
=> x= 24:57
=> x= 24/57
vậy x= 24/57
tk mk nha m.n
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\(3\left(2x+1\right)^3\)\(=24\)
\(\left(2x+1\right)^3\)\(=24:3=8\)\(=2^3\)
\(\left(2x+1\right)^3\)\(=2^3\)
\(2x+1=2\)
\(2x=2-1=1\)
\(x=1:2=0,5=\frac{1}{2}\)