hannah1brown hannah1brown

06-12-2016
Mathematics

Answered

What pair is the solution of [ x-y=-3 and [2x+y=0

Verified Answer :

d20010110 d20010110

06-12-2016

x-y=-3---------No.1
2x+y=0-------No.2
No.1+No.2:3x=-3
x=-1
y=2

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texaschic101 texaschic101

06-12-2016

x - y = -3
2x + y = 0
----------------add
3x = -3
x = -3/3
x = -1

x - y = -3
-1 - y = -3
-y = -3 + 1
-y = -2
y = 2

solution is (-1,2)

Answer Link

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