Question

X+y=12. 2x-y=18 Хееееелп!!!!!

Answer 1

Ответ:

x=10, y=2..................

Answer 2

Ответ:

подробное решение на фото

Answer 3

I'd be happy to help you with these equations! It looks like you have a system of two linear equations with two variables, x and y. You can solve this system of equations using various methods, such as substitution or elimination. Let's use the elimination method to solve it:

1. Start with the given equations:

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   x + y = 12   (Equation 1)
   2x - y = 18   (Equation 2)
   

2. To eliminate one of the variables, add Equation 1 and Equation 2 together. This will eliminate the 'y' variable:

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   (x + y) + (2x - y) = 12 + 18
   

3. Simplify the equation:

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   3x = 30
   

4. Divide both sides by 3 to solve for 'x':

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   x = 30 / 3
   x = 10
   

5. Now that you've found the value of 'x,' you can substitute it back into either Equation 1 or Equation 2 to find 'y.' Let's use Equation 1:

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   x + y = 12
   10 + y = 12
   

6. Solve for 'y':

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   y = 12 - 10
   y = 2
   

So, the solution to the system of equations is:

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x = 10
y = 2

Therefore, the values of 'x' and 'y' that satisfy both equations are 'x = 10' and 'y = 2'.