SOLUTION: solve the simultaneous equations 3x-2y=12 x+3y=-7

Question 1002872: solve the simultaneous equations
3x-2y=12
x+3y=-7
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
3 x -2 y = 12 .............1
Total value
1 x + 3 y = -7 .............2
Eliminate y
multiply (1)by 3
Multiply (2) by 2
9 x -6 y = 36
2 x + 6 y = -14
Add the two equations
11 x = 22
/ 11
x = 2
plug value of x in (1)
3 x -2 y = 12
6 -2 y = 12
-2 y = 12 -6
-2 y = 6
y = -3
x= 2
y= -3
m.ananth@hotmail.ca

RELATED QUESTIONS
1a) solve algebraically these simultaneous equations 3x-y=1 x+2y=12 B) 14x+3y=1... (answered by Fombitz)

solve the following simultaneous equations 3x+2y=12 5x-2y+4 3x+5y=26... (answered by jim_thompson5910)

Simultaneous equation exercise 7: solving problem using simultaneous equations Q8: find (answered by Cromlix)

solve simultaneous equations algebraically 2y+x=9... (answered by ikleyn)

sketch the graphs to solve these two simultaneous equations. x+3y=3 and... (answered by Fombitz)

Solve the following simultaneous equations a. 2x+3y-z= 13 x -2y+2z=-3 3x+y +z... (answered by Alan3354)

solve the simultaneous equation: 4x-3y=7... (answered by Fombitz)

Simultaneous Equations 3x+2y=16... (answered by Alan3354)

Solve the simultaneous equation 2x-3y=17 and... (answered by ikleyn,Boreal)