Question

[Hoàng Ích Phúc]

a,1/2*x+2/3*(x-2)=1/3

b,16^x-1:16=4⁴

Answer 1

[Lê Ng Hải Anh]

\(a,\frac{1}{2}x+\frac{2}{3}\left(x-2\right)=\frac{1}{3}\)

\(\frac{1}{2}x+\frac{2}{3}x-\frac{4}{3}=\frac{1}{3}\)

\(\frac{7}{6}x=\frac{5}{3}\)

\(x=\frac{10}{7}\)

\(b,16^{x-1}:16=4^4\)

\(16^{x-1}=4096\)

\(16^{x-1}=16^3\)

\(\Rightarrow x-1=3\)

\(x=4\)

=.= hk tốt!!

Answer 2

[Trần Vũ Dũng]

a) \(\frac{1}{2}x+\frac{2}{3}\left(x-2\right)=\frac{1}{3}\)

<=>\(\frac{x}{2}+\frac{2x}{3}-\frac{4}{3}-\frac{1}{3}=0\)<=>\(\frac{7x}{6}-\frac{5}{3}=0\)=>x=\(\frac{10}{7}\)

b)16^x-1:16=256 => 16^x-1=4096=16³

^{T thấy x-1=3 =>x=2}

Chúc bạn học tốt