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Use either substitution or elimination to solve the following system of equations, find the solution. Show all of your work. 7x + 4y = -5 -2x + 5y = 26 I attached a picture of t…
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Use either substitution or elimination to solve the following system of equations, find the solution. Show all of your work. 7x + 4y = -5 -2x + 5y = 26 I attached a picture of t…
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Apr 9, 2018
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Use either substitution or elimination to solve the following system of equations, find the solution. Show all of your work.
7x + 4y = -5
-2x + 5y = 26
I attached a picture of the problem.
Mathematics
middle-school
Timothy Vogel
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Timothy Vogel
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Elimination:
-5 (7x+4y=-5) -35x + -20y = 25
4 (-2x+5y=26) -8x + 20y = 104
Y's cancel out
-43x = 129 Divide each side by -43
X = -3
7(-3) + 4y = -5
-21 + 4y = -5 Add 21 to each side
4y = 16 Divide each side by 4
y = 4
CurlyBraces
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Apr 14, 2018
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