\(\left(a\right)a.x=b\Rightarrow x=\frac{b}{a}\)
\(\left(b\right)x:a=b\Rightarrow x=a.b\)
\(\left(c\right)a:x=b\Rightarrow x=a:b\)
\(\left(d\right)x+a=b\Rightarrow x=b-a\)
\(\left(e\right)x-a=b\Rightarrow x=a+b\)
\(\left(f\right)a-x=b\Rightarrow-x=b-a\Rightarrow x=a-b\)
\(\left(g\right)ax+b=c\Rightarrow x=\frac{c-b}{a}\)
\(\left(h\right)ax-b=c\Rightarrow x=\frac{c+b}{a}\)
\(\left(i\right)x:a+b=c\Rightarrow x=\left(c-b\right).a\)
\(\left(k\right)a:x+b=c\Rightarrow x=\frac{a}{c-b}\)
\(\left|x^2+1\right|\)= \(\frac{2}{3}\)
b, \(\frac{1}{5.8}\)\(+\frac{1}{8.11}\)\(+\frac{1}{11.14}\)\(+...+\frac{1}{x.\left(x+3\right)}\)\(=\frac{101}{1546}\)
CÁC BẠN GIÚP MÌNH BÀI TÌM X TRÊN NHÉ MIK ĐANG CẦN GẤP