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What does x and y equal and the equation for x for 2x - 4y equals 3.8 and 3x - y equals 17.7?
Wiki User
∙ 13y ago
Try a system of equations and substitution, or elimination here.
2X - 4Y = 3.8
3X - Y = 17.7
I will try elimination
-3(2X - 4Y = 3.8)
2(3X - Y = 17.7)
-6X + 12Y = -11.4
6X - 2Y = 35.4
----------------------------add
10Y = 24
Y = 12/5
Put into one of original equations for X
3X -(12/5) = 17.7
3X = 201/10
X = 67/10
---------------
check
2(67/10) - 4(12/5) = 3.8
67/5 - 48/5 = 3.8
19/5 = 3.8
3.8 = 3.8
checks for that one, you check the other. Hint change to fractions, or decimals for better handling. My TI-84 can do this easily, but I do not know your calculator or capabilities
Wiki User
∙ 13y ago
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