3 years ago

3x - 3y = 9 and x + 3y = 12 *

Mathematics

1 answer:

elena55 [62]3 years ago

8 0

Answer:

Solving equation i and ii, we get;

3x-3y+x+3y=9+12

4x=21

x=21/4

Putting the value of x in equation ii.

(21/4)+3y=12

3y=12-(21/4)

3y=(48-21/4)

y=27/(4*3)

y=9/4

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