Question

450:(25+5*5с)=154*х+2*х+5*х=80-28:2помогите решить

Answer 1

450:(25+5*5c)=15
25+25c=450:15
25+25c=30
25c=30-25
25c=5
c=5:25
c=0,2
4*х+2*х+5*х=80-28:2
4x+2x+5x=80-14
11x=66
x=66:11
x=6

Answer 2

To solve the equation, let's break it down step by step:

1. Simplify the expression on the left side of the equation: 450:(25+5*5c)

First, calculate the value inside the parentheses: 25 + 5 * 5c = 25 + 25c

Then, divide 450 by the result: 450 / (25 + 25c) = 18 / (1 + c)

So, the left side of the equation simplifies to 18 / (1 + c).

2. Simplify the expression on the right side of the equation: 154x + 2x + 5x

Combine like terms: 154x + 2x + 5x = 161x

So, the right side of the equation simplifies to 161x.

3. Simplify the expression on the right side of the equation: 80 - 28:2

First, divide 28 by 2: 28 / 2 = 14

Then, subtract 14 from 80: 80 - 14 = 66

So, the right side of the equation simplifies to 66.

Now, we have the equation: 18 / (1 + c) = 161x = 66

To solve for x and c, we need to isolate each variable.

4. Solve for x: 18 / (1 + c) = 66

Multiply both sides of the equation by (1 + c): 18 = 66(1 + c)

Distribute 66: 18 = 66 + 66c

Subtract 66 from both sides of the equation: 18 - 66 = 66c

Simplify: -48 = 66c

Divide both sides of the equation by 66: -48 / 66 = c

Simplify: -8/11 = c

So, c = -8/11.

5. Solve for x: Now that we have the value of c, we can substitute it back into the equation to solve for x.

18 / (1 + (-8/11)) = 66

Simplify the denominator: 18 / (1 - 8/11) = 66

Find a common denominator: 18 / (11/11 - 8/11) = 66

Simplify the denominator: 18 / (3/11) = 66

Invert the denominator and multiply: 18 * (11/3) = 66

Simplify: 198/3 = 66

Divide both sides of the equation by 66: 198/3 / 66 = x

Simplify: 6 = x

So, x = 6.

Therefore, the solution to the equation is x = 6 and c = -8/11.