a: \(3x-2\left(5-4x\right)=3-2x\)
=>3x-10+8x=3-2x
=>11x-10=3-2x
=>13x=13
=>x=1
b: \(3\left(2.2x-4\right)=1-2.6\left(3x+7\right)\)
=>6,6x-12-1+7,8x+18,2=0
=>14,4x-5,2=0
=>14,4x=5,2
=>x=52/144=13/36
c: =>3-2x+2=8-2x
=>5=8(vô lý)
d: =>5x+8x-20=x-2-18+12x
=>13x-20=13x-20
=>0x=0(luôn đúng)
e:=> \(\dfrac{x-3}{5}=\dfrac{18-1+2x}{3}=\dfrac{2x+17}{3}\)
=>5(2x+17)=3(x-3)
=>10x+85=3x-9
=>7x=-94
=>x=-94/7
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