aliciaaguilera4
aliciaaguilera4
26-02-2020
Mathematics
contestada
Solve each system by substitution
Respuesta :
aryasus30
aryasus30
26-02-2020
Step-by-step explanation:
{9x+3y=-36
y=-3x-21
9x-9x-36=-36
y=-3x-21
x=0
y=-21
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