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If you were to use the substitution method to solve the following

system, choose the new equation after the expression equivalent to x
from the second equation is substituted into the first equation.
3x + 2y = -21
x-3y = 4 (6 points)

User Punit Vara
by
7.2k points

1 Answer

4 votes

Answer:

Explanation:

Making x the subject in the second equation gives:

x = 4+3y

substituting x = 4 +3y into the first one gives:

3(4 + 3y) + 2y = -21

12 + 9y +2y = -21

11y = -33

y = -3

User Daneen
by
7.8k points

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