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We move all terms to the left:</span>

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We add all the numbers together, and all the variables</span>

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We move all terms containing y to the left, all other terms to the right</span>


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Answer:
Solution of the given equations is (-5,2)
Step-by-step explanation:
We have been given the following system of equations:
y = (2/5)x + 4
y = 2x + 12
The solution of the system of equation can be found by finding the point of intersection of both lines on the graph. The graph of both equations is attached below.
As we can see that both the lines intersect each other at one point, and that point is (-5,2). So the solution of the given equations is (-5,2)
Answer:
Step-by-step explanation:
<h2>7 but th 3rd is silrt</h2>
Answer:
The man is 27 years old.
Step-by-step explanation:
You can create a system of equations.
Let x = the age of the man
Let y = the age of his son
You can create the following equations based on what was given in the problem:
1. x = y + 18
2. (x - 3) = 4(y - 3)
You can simplify the second equation:
x - 3 = 4y - 12
x = 4y - 9
Then, solve the system of equations:
x = y + 18
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x = 4y - 9
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0 = -3x + 27
The son's age is 9, therefore the father is 27 years old.