jasmineolivera jasmineolivera

19-11-2017
Mathematics

contestada

Solve the system of equations -5x-3y=2−5x−3y=2 and -4x+2y=-38−4x+2y=−38 by combining the equations.

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vunderkid vunderkid

19-11-2017

{-5x-3y=2 //*2
{-4x+2y=-38 //*3

{-10x-6y=4
+
{-12x+6y=-114

-22x=-110
x=5
-20+2y=-38
2y=-18
y=-9
Answer
x=5; y=-9

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