uzumakigrrl247
uzumakigrrl247
25-01-2018
Mathematics
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Systems of equations pls help!
Respuesta :
anchitthawi
anchitthawi
28-01-2018
equation 1 + equation 2
3x-8y +(-3x+10y) = 9+(-15)
2y= -6
then y=-3
from equation 1
3x-8y=9
3x-8(-3)=9
3x+24=9
3x=9-24=-15
then x=-5
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