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Solve the system {3x-y=4 -9x+3y=-12

Solve the system {3x-y=4 -9x+3y=-12
asked 69.7k views
5 votes
Solve the system
{3x-y=4
-9x+3y=-12

asked
User Meraj Rasool
by
8.3k points

1 Answer

6 votes
Hello :
3x-y=4 .....(1)
-9x+3y=-12 ....(2)
by (1) : y = 3x-4
in (1) : -9x +3(3x-4) = -12
-12=-12
infinity solution : ( x , 3x-4) x in R
answered
User Jether
by
8.5k points
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