brunoinfante20 brunoinfante20

14-05-2016
Mathematics

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3x+2y=19
x+y=8
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SmarticalParticals SmarticalParticals

14-05-2016

3x + 2y = 19
x + y = 8

3 (x + y) = 3 (8)
3x + 3y = 24

3x + 2y = 19
-
3x + 3y = 24
--------------------
-y = -5
y= 5

x + y = 8
x + 5 = 8
x = 3

(3, 5)

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