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Solve the system of equations using substitution. 4x-y=7 3y-12x=-21

Solve the system of equations using substitution. 4x-y=7 3y-12x=-21
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5 votes
Solve the system of equations using substitution.

4x-y=7 3y-12x=-21

User Ncomputers
by
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2 Answers

2 votes
y=4x-7

3(4x-7)-12x=-21
12x-21-12x=-21
-21=-21

so it is all real numbers
User Simon Watkins
by
7.9k points
4 votes

Answer:

Infinite solution

Explanation:

User Geoff Goodman
by
8.5k points
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