Question

c) 22x-6×2x+8=0. d) 3x+2+3x-2=82. e) 2x-2x+1=8. f) 3x+1 +3x=36 conta e resposta

Answer 1

$C) 22x-6*2x+8=0 \\ \\ 22x-12x+8=0 \\ \\ 10x=0-8 \\ \\ x= \dfrac{-8}{10}\to \boxed{ x= \dfrac{-4}{5} } \\ \\ \\ D) 3x+2+3x-2=82 \\ \\ 3x+3x+2-2=82 \\ \\ 6x=82\to x= \dfrac{82}{6}\to \boxed{ x= \dfrac{41}{3}}$


$E) 2x-2x+1=8 \\ \\0x+1=8 \to 0x= 8-1\to 0x= 7\to Absurdo \\ \\ \\ f) 3x+1 +3x=36 \\ \\ 3x+3x= 36-1 \\ \\ 6x= 35\to \boxed{ x= \dfrac{35}{6}}$


Até outra vez!!!!