Question

 

giúp với nha

Answer 1

\(a,\Rightarrow x=-1\\ b,\Rightarrow2u=0\Rightarrow u=0\\ c,\Rightarrow5-x+6=12-8x\\ \Rightarrow7x=1\Rightarrow x=\dfrac{1}{7}\\ d,\Rightarrow-9+12x=-45-6x\\ \Rightarrow18x=-36\Rightarrow x=-2\\ e,\Rightarrow0,1-0,1t+0,2=2t-5-0,7\\ \Rightarrow2,1t=6\\ \Rightarrow t=\dfrac{20}{7}\\ f,\Rightarrow\dfrac{3}{2}x-\dfrac{15}{8}-\dfrac{5}{8}=x\\ \Rightarrow\dfrac{1}{2}x=\dfrac{5}{4}\\ \Rightarrow x=\dfrac{5}{2}\)