Предмет: Математика, автор: meeeuuuw

помогите пожалуйста, нужно с выражением под буквой с. я не понимаю откуда -0,3х.​ ​

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Ответы

Автор ответа: MagdaSinger
1

Ответ:

\dfrac{ 3 }{ 5 } \left( -0.5x-10 \right) +4 =\\\\\dfrac{ 3 }{ 5 } *-\dfrac{5}{10} x-\dfrac{ 3 }{ 5 } *10+4=-\dfrac{ 3*5x }{ 5*10 }-\dfrac{ 3*10 }{ 5 }+4=-\frac{3x}{10} -6+4=-\frac{3x}{10} -2

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