algebra
posted by Tony .
I need a step by step explanation on how to add these two equations
2x+3y=1
5x+3y=16
Subtract the first equation from the second. (Subtract left and right sides separately). This gives you
3x = 15
Then divide both sides by 3.
x = 5
Pretty easy, huh?
After you have x, you can get y by using any of the original equations.
10 + 3y = 1
Subtract 10 from both sides.
3y = 9
Divide both sides by 3
y = 3
2x + 3y =1
5x + 3y = 16
Multiply the 2nd equation by 1, then add them together like this:
2x + 3y = 1
5x  3y =16
_________________
3x = 15
Divide by 3 to get x =5. Now, substitute 5 for x in one of the equations and solve for y.
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