Solve, using linear combination. 4x + y = 5 3x + y = 3 (0, _3) (0, 5) (2, _3) (_3, 7)

Multiply the first equation by -1 to get  -4x - y = --5

Then add the second equation               3x + y = 3    

                                                           +  

                                                                  -x = -2  or x = 2

then plug in 2 for x in one of the equations and solve for y      4(2) + y = 5  

                                                                                                          8 + y = 5

                           Subtract 8 from both sides                                        y = -3

                             So x = 2, y = -3     or (2,-3)                                  

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

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