Question

​ ​1) x : 300+ 20= 50 2) 900-30x =750 3) 750:(x+5) =30

Answer 1

Ответ:

В прикреплённом файле

Answer 2

It looks like you've provided a set of equations. Let's solve them step by step:

1. $x : 300 + 20 = 50$

It seems there might be a typo in this equation. The equation doesn't seem to be set up correctly. If you can clarify the equation, I'd be happy to help you solve it.

2. $900 - 30x = 750$

Let's solve this equation for $x$:

Subtract 900 from both sides: $-30x = 750 - 900$ $-30x = -150$

Divide both sides by -30: $x = \frac{-150}{-30}$ $x = 5$

So, the solution for this equation is $x = 5$.

3. $750 : (x + 5) = 30$

Let's solve this equation for $x$:

Multiply both sides by $x + 5$: $750 = 30 \cdot (x + 5)$

Divide both sides by 30: $\frac{750}{30} = x + 5$ $25 = x + 5$

Subtract 5 from both sides: $x = 25 - 5$ $x = 20$

So, the solution for this equation is $x = 20$.

To summarize:

1. Please provide the correct form of the first equation.
2. The solution for the second equation is $x = 5$.
3. The solution for the third equation is $x = 20$.