Question

Answer 1

\(\dfrac{x-1}{6}=\dfrac{x+5}{7}\)

\(\Rightarrow\dfrac{7x-7}{42}=\dfrac{6x+30}{42}\)

\(\Rightarrow7x-7=6x+30\Rightarrow x=37\)

Answer 2

\(\Leftrightarrow7x-7=6x+30\)

hay x=37

Answer 3

\(\Leftrightarrow\dfrac{\left(x-1\right).7}{42}=\dfrac{\left(x+5\right).6}{42}\)

\(\Rightarrow\left(x-1\right).7=\left(x+5\right).6\)

\(\Leftrightarrow7x-7=6x+30\)

\(\Leftrightarrow7x-6x=30+7\)

\(\Leftrightarrow x=37\)

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