Mathematics, 25.05.2021 02:00 DivineMemes420

Uhh I’m doing math work and I need help! I’m doing Solve the system of linear equations using substitution. And I have this problem and I keep getting -6 for y but the right answer for y is positive 6; can someone tell me what I’m doing wrong?!?

Uhh I’m doing math work and I need help! I’m doing Solve the system of linear equations using subst

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Uhh I’m doing math work and I need help! I’m doing Solve the system of linear equations using substi...