SOLUTION: 4x-3y=19 6x+3y=21

Question 1016110: 4x-3y=19
6x+3y=21

Found 2 solutions by Fombitz, skippo:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Add the equations together to eliminate y.

Now solve for x.
Then go back to either equation and solve for y.
Answer by skippo(9) (Show Source): You can put this solution on YOUR website!
4x-3y=19...........I
6x+3y=21...........II
solution:
add equation I and II to eliminate y
4x-3y+6x+3y=19+21
10x=40
divide both sides by 10
10x/10 = 40/10
x=4
substitute 4 for x in equation I
4(4)-3y=19
16-3y=19
-3y=19-16
-3y=3
divide both sides by -3
-3y/-3 = 3/-3
y = -1
x=4, y=-1
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