Question

va rogggg urgent✨✨✨✨✨​

Answer 1

1) x = (6-4y)/3

2x-5y = -19

x = (6-4y)/3

2(6-4y)/3 -5y= -19  amplifici pe 5y si -19 cu 3

x = (6-4y)/3

12-8y-15y= -57

x = (6-4y)/3

-23y = -57-12

x= (6-4y)/3

y = -69/-23 = 3

x = (6-12)/3 = -6/3 = -2

deci x = -2

y = 3

2) V2x - 3V3x = -7 /*(-2)

  2V2x-5V3y= -11

-2V2x+6V3x= 14

2V2x-5V3y = -11

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/        -V3y = 3 => -y = 3/V3 rationalizezi cu V3 => y = -3V3/3

V2x-3V3*(-3V3/3) = -7

V2x +3*3 = -7

V2x = -7-9

V2x = -16

x= -16/V2 = -16V2/2

x = -8V2