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20 votes
20 votes
X = 16 - 4y
3x + 4y =8
substitution method

User Mark Ryan Orosa
by
2.9k points

1 Answer

18 votes
18 votes

Answer:

i think x = -4, y = 5

Explanation:

x = 16 - 4y

3x + 4y = 8

3(16 - 4y)+4y = 8

48-12y+4y = 8

48-8y = 8

48-8 = 8y

40 = 8y

5 = y

so

x = 16 - 4y

x = 16 - 4(5)

x = 16 - 20

x = -4

User Nirit
by
2.8k points