SOLUTION: i sent the wrong email by accident my problem was x+y=45 11x+10y= ? i've already tried 100, 80, & 81. all of them were no solution. i already know how to graph it & s

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: i sent the wrong email by accident my problem was x+y=45 11x+10y= ? i've already tried 100, 80, & 81. all of them were no solution. i already know how to graph it & s      Log On


   

Question 440320: i sent the wrong email by accident
my problem was
x+y=45
11x+10y= ?
i've already tried 100, 80, & 81. all of them were no solution.
i already know how to graph it & solving it algebraically .
i just need help finding a number to make it a solution.
Found 2 solutions by MathLover1, Alan3354:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

x%2By=45....x=45-y
11x%2B10y=0+
-----------------------add
12x%2B11y=45
12%2845-y%29%2B11y=45
540-12y%2B11y=45
540-y=45
540-45=y
495=y

x=45-y
x=45-495
x=-450
check:
11%28-450%29%2B10%2A495=0+
-4950%2B4950=0+
0=0+

x%2By=45
-450%2B495=45
45=45

graph:
y=45-x
y=11x%2F10=1.1x+
+graph%28500%2C+500%2C+-500%2C+500%2C+-500%2C+500%2C+45-x%2C+1.1x%29+



Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=45
11x+10y= ?
i've already tried 100, 80, & 81. all of them were no solution.
i already know how to graph it & solving it algebraically .
i just need help finding a number to make it a solution.
--------------------------
Actually, you can put any number in place of the ? (except 45) and solve the 2 equation system.
For example
x+y=45
11x+10y = 0
y = 45 - x
11x + 10*(45-x) = 0
11x + 450 - 10x = 0
x = -450
y = 495
-----------
Or,
x+y=45
11x+10y= 1000
y = 45 - x
11x + 10(45-x) = 1000
x + 450 = 1000
x = 550
y = -505