merry021700 merry021700

30-08-2017
Mathematics

contestada

9+y=3x
6y=-3x-12
Help please

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texaschic101 texaschic101

30-08-2017

9 + y = 3x....y = 3x - 9

6y = -3x - 12
6(3x - 9) = -3x - 12
18x - 54 = -3x - 12
18x + 3x = -12 + 54
21x = 42
x = 42/21
x = 2

9 + y = 3x
9 + y = 3(2)
9 + y = 6
y = 6 - 9
y = -3

solution is (2,-3) <==

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eringage01 eringage01

30-08-2017

y=3x-9
y=-1/2x-2
if you're looking for y i believe that is it

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