SOLUTION: Can someone help me with this one
Solve the system by graphing, addition and substitution methods.
5x – 4y = –5
x – 2y = –7
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Question 88289: Can someone help me with this one
Solve the system by graphing, addition and substitution methods.
5x – 4y = –5
x – 2y = –7
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
5x – 4y = –5
x – 2y = –7
Multiply the second equation by -2 to eliminate the y terms:
5x – 4y = –5
-2x +4y = 14
Add the equations:
3x=9
x=3
Substitute x=3 into the first equation:
5x – 4y = –5
5(3) -4y =-5
15-4y = -5
15-15-4y = -5-15
-4y = -20
y=5
Check by substituting both numbers into the second equation:
x – 2y = –7
3-2(5) = -7
It checks
Solution: (3,5)
R^2
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