RESPUESTA:
[tex]\left(x\right)=\left(2x-1\right)\cdot \:9+\left(x+1\right)\cdot \:3+2[/tex]
[tex]x=\left(2x-1\right)\cdot \:9+\left(x+1\right)\cdot \:3+2[/tex]
[tex]=9\left(2x-1\right)+3\left(x+1\right)+2[/tex]
[tex]=18x-9+\left(x+1\right)\cdot \:3+2[/tex]
[tex]=18x-9+3x+3+2[/tex]
[tex]=21x-4[/tex]
[tex]x-21x=21x-4-21x[/tex]
[tex]-20x=-4[/tex]
[tex]\frac{-20x}{-20}=\frac{-4}{-20}[/tex]
[tex]=x[/tex] [tex]=\frac{1}{5}[/tex]
[tex]RPTA:x=\frac{1}{5}[/tex]
【ツ】亗 CORONA 亗
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RESPUESTA:
[tex]\left(x\right)=\left(2x-1\right)\cdot \:9+\left(x+1\right)\cdot \:3+2[/tex]
[tex]x=\left(2x-1\right)\cdot \:9+\left(x+1\right)\cdot \:3+2[/tex]
[tex]=9\left(2x-1\right)+3\left(x+1\right)+2[/tex]
[tex]=18x-9+\left(x+1\right)\cdot \:3+2[/tex]
[tex]=18x-9+3x+3+2[/tex]
[tex]=21x-4[/tex]
[tex]x-21x=21x-4-21x[/tex]
[tex]-20x=-4[/tex]
[tex]\frac{-20x}{-20}=\frac{-4}{-20}[/tex]
[tex]=x[/tex] [tex]=\frac{1}{5}[/tex]
[tex]RPTA:x=\frac{1}{5}[/tex]
【ツ】亗 CORONA 亗