Solve the system by the
substitution method.
7x + y = -6
7x - 3y = 18
2 answers:
Answer:
Stdivise 7 aep-by-step explanation:
Answer:
Step-by-step explanation:
7x + y = -6
y = -7x - 6
7x - 3y = 18
7x - 3(-7x - 6) = 18
7x + 21x + 18 = 18
7x + 21x = 18 - 18
28x = 0
x = 0/28
x = 0 <=========
7x + y = -6
7(0) + y = -6
0 + y = -6
y = -6 <==========
solution is : (0,-6)
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