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The sum of two numbers, x and y, is 12. The difference of x and two times y is 6. What are the values of x and y? x = 8, y = 4 x = 10, y = 2 x = 18, y = -6 x = 20, y = -8
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The sum of two numbers, x and y, is 12. The difference of x and two times y is 6. What are the values of x and y? x = 8, y = 4 x = 10, y = 2 x = 18, y = -6 x = 20, y = -8
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Sep 10, 2018
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The sum of two numbers, x and y, is 12. The difference of x and two times y is 6. What are the values of x and y? x = 8, y = 4 x = 10, y = 2 x = 18, y = -6 x = 20, y = -8
Mathematics
high-school
Omid Shariati
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Omid Shariati
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X=10 will be a answer
Benjamin Wulfe
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Sep 12, 2018
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Benjamin Wulfe
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x+y=12
x-2y=6
hmm
multiply 2nd equation by -1 and add to first
-x+2y=-6
x+y=12 +
0x+3y=6
3y=6
y=2
sub back
x+y=12
x+2=12
x=10
x=10, y=2
Joey Harwood
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Sep 15, 2018
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Joey Harwood
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