SOLUTION: what will be the solution to 4x+5y=16 and -4x-10y=4

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Question 1167378: what will be the solution to
4x+5y=16
and
-4x-10y=4
Found 2 solutions by josgarithmetic, Boreal:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
%284x%2B5y%29%2B%28-4x-10y%29=16%2B4
-5y=20
y=-4
You can decide how to solve for x.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
add them since additive inverses
-5y=20
y=-4
x=9
(9, -4) is another way to write it.