SOLUTION: Use linear combinations to solve the linear system. Then check your solution. x+y=4 x-y=-10

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> SOLUTION: Use linear combinations to solve the linear system. Then check your solution. x+y=4 x-y=-10      Log On


   

Question 179084This question is from textbook Algebra 1 Concepts and Skills
: Use linear combinations to solve the linear system. Then check your solution.
x+y=4
x-y=-10 This question is from textbook Algebra 1 Concepts and Skills

Answer by HyperBrain(694) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=4
x-y=-10
Just add the two equations:
(x+x)+(y-y)=4+(-10)
2x=-6
x=-3>>ans.
x+y=4
-3+y=4
y=7>>>Ans.
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HyperBrain!
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