SOLUTION: Could someone help me solve the substitution method using this example.
2x + 7y =12
x=8 -4y
What is the soltuion
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2x + 7y =12
x=8 -4y
What is the soltuion
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Question 148678: Could someone help me solve the substitution method using this example.
2x + 7y =12
x=8 -4y
What is the soltuion Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 2x + 7y =12
x=8 -4y
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Substitute x= 8-4y into the 1st equation:
2(8-4y) + 7y = 12
16-8y + 7y = 12
16 -y = 12
y = 4
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Substitute into x = 8-4y to solve for Y.
x = 8-4*4
x = -8
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Solution
x = -8; y = 4
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Cheers,
Stan H.
Cheers,
(