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Sagot :
Answer:
3x-y= -13—1
y=5x-19—2
substitute equation 2 into equation 1
3x-(5x-19)= -13
3x-5x+19= -13
collect like terms
3x-5x= -13-19
-2x=-32
divide both sides by the coefficient of x
-2x/-2=32/-2
x= -16
substitute x= -16 into equation 2
3x-y= -13
3(-16)-y= -13
-48-y= -13
collect like terms
-y= -13+48
-y=35
y=-35
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