Answered

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-3x-3y=3
5x+y=-17
What is the answer ?


Sagot :

-3x - 3y = 3     ⇒   -3x - 3y = 3
 5x + 1y = -17 ⇒ -15x - 3y = 51
                                    12x = -48
                                     12      12
                                        x = -4
                                5x + y = -17
                             5(-4) + y = -17
                               -20 + y = -17
                             + 20         + 20
                                         y = 3
                                    (x, y) = (-4, 3)