Question

x* 17,7 - x * 7,7 *x = 177 

Answer 1

\(x\times17,7-x\times7,7=177\)

\(\Leftrightarrow x\left(17,7-7,7\right)=177\)

\(\Leftrightarrow10x=177\)

\(\Leftrightarrow x=177\div10\)

\(\Leftrightarrow x=17,7\)

Vậy \(x=17,7\)

Answer 2

x×17,7−x×7,7=177

⇔x(17,7−7,7)=177

⇔10x=177

⇔x=177÷10

⇔x=17,7

Vậy x=17,7