The solution to the given simultaneous equation; x + 2y = -4, 2x + 5y = 1 using substitution method is x = -22 and y = 9
<h3>Simultaneous equation</h3>
x + 2y = -4
2x + 5y = 1
Using Substitution method
From equation (1)
x = -4 - 2y
Substitute x = -4 - 2y into equation (2)
2x + 5y = 1
2(-4 - 2y) + 5y = 1
-8 - 4y + 5y = 1
- 4y + 5y = 1 + 8
y = 9
Substitute y = 9 into
x + 2y = -4
x + 2(9) = -4
x + 18 = -4
x = -4 - 18
x = - 22
Therefore, the solution to the given simultaneous equation; x + 2y = -4, 2x + 5y = 1 using substitution method is x = -22 and y = 9
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Finding how much fence Angela needs to put in garden can be found by finding the perimeter of the walls that are not blocked by anything. For example, the house is blocking one side of the garden.
We can write this expression as: 2x + 2x + x
After solving we get 5x.
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(-x,y)
Step-by-step explanation: