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zhenek [66]
3 years ago
7

Find the solution to the equations. 2х-у=-3 х+у=0 0,0 -1,1 1,-1

Mathematics
2 answers:
Lelechka [254]3 years ago
7 0

Answer:

Option B : ( - 1 , 1 )   ==>    x = -1 , y = 1

Step-by-step explanation:

2x - y = - 3              -------- ( 1 )

x + y = 0 => x = - y   -------( 2 )

Substitute ( 2 ) in ( 1 ) : 2x  - y = - 3

                                 2( - y ) - y = - 3

                                  - 2y - y = -  3

                                   - 3y = - 3

                                       y = 1

Substitute y in ( 2) : x + y = 0

                              x + 1 = 0

                                x =  - 1

kobusy [5.1K]3 years ago
3 0
It’s 0,0. The correct answer!
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