Question

A:5 = 15*10 (500 - x): 4 = 120​

Answer 1

$a:5=15*10\\a:5=150\\a=150*5\\a=750$

Ответ:  $a=750.$

$(500-x):4=120\\500-x=480\\x=500-480\\x=20$

Ответ: $x=20.$

Answer 2

It looks like you have an equation that you'd like to solve for the variable "x." The equation you provided is:

(5 / 15) * 10 = (500 - x) / 4 = 120

Let's break it down step by step:

1. Simplify the left side of the equation:

(5 / 15) * 10 = (1/3) * 10 = 10/3

So, the left side of the equation simplifies to 10/3.

2. Now, we have:

10/3 = (500 - x) / 4 = 120

3. To solve for "x," we can first isolate the fraction on the right side of the equation by multiplying both sides by 4:

(10/3) * 4 = 500 - x

4. Now, simplify the left side:

(10/3) * 4 = (10/3) * (4/1) = (10 * 4) / (3 * 1) = 40/3

So, we have:

40/3 = 500 - x

5. To isolate "x," subtract 500 from both sides of the equation:

40/3 - 500 = -x

6. Now, solve for "x" by multiplying both sides by -1 to make "x" positive:

x = -1 * (40/3 - 500)

x = -(40/3 - 500)

x = -(40/3) + 500

Now, let's calculate the value of "x":

x = -40/3 + 500 = -40/3 + 1500/3 = (1500 - 40) / 3 = 1460/3

So, the value of "x" is 1460/3, or approximately 486.67 when rounded to two decimal places.