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20x-3y = 4 and 3x -y = -5

Sagot :

Answer:

Step-by-step explanation:

3x-y=-5

y=3x+5

20x-3(3x+5)=4

20x-9x-15=4

11x=19

x=[tex]\frac{19}{11}[/tex]

y=3([tex]\frac{19}{11}[/tex])+5

y=[tex]\frac{112}{11}[/tex]

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