Question

a)\(\dfrac{x-2}{x+3}=\dfrac{3}{4}\)                                   b)-1,04:x=18,72:16,38

Answer 1

\(a,\Leftrightarrow4\left(x-2\right)=3\left(x+3\right)\left(x\ne-3\right)\\ \Leftrightarrow4x-8=3x+9\\ \Leftrightarrow x=17\left(tm\right)\\ b,\Leftrightarrow\dfrac{-1,04}{x}=\dfrac{18,72}{16,38}\\ \Leftrightarrow x=\dfrac{-1,04\cdot16,38}{18,72}=-0,91\)

Answer 2

a) ĐKXĐ: \(x\ne-3\)

\(\Leftrightarrow4x-8=3x+9\\ \Leftrightarrow x=17\)

b) \(\Leftrightarrow-1,04:x=\dfrac{8}{7}\\ \Leftrightarrow x=-\dfrac{91}{100}\)