Question

(x) = (2x – 1)9 + (x + 1)3 + 2

Answer 1

RESPUESTA:

$\left(x\right)=\left(2x-1\right)\cdot \:9+\left(x+1\right)\cdot \:3+2$

$x=\left(2x-1\right)\cdot \:9+\left(x+1\right)\cdot \:3+2$

$=9\left(2x-1\right)+3\left(x+1\right)+2$

$=18x-9+\left(x+1\right)\cdot \:3+2$

$=18x-9+3x+3+2$

$=21x-4$

$x-21x=21x-4-21x$

$-20x=-4$

$\frac{-20x}{-20}=\frac{-4}{-20}$

$=x$      $=\frac{1}{5}$

$RPTA:x=\frac{1}{5}$

【ツ】亗 CORONA 亗