2x+5y=16
5x-2y=11
Please help me solve this system of equations!! I keep getting no solution and i do not know what I am doing wrong.
2 answers
If you don't even know what one of the variables are, you can't solve the equasion. There IS no solution.
First you multiply the first equation by 5 and the second equation by -2.
You get:
10x+25 = 80
-10x+4y = -22
You cancel out the 10x. Therefore you add the two equations and you get
29y=58
y=2
You plug in 2 for y in any one of the original equations and you get:
x= 3
You get:
10x+25 = 80
-10x+4y = -22
You cancel out the 10x. Therefore you add the two equations and you get
29y=58
y=2
You plug in 2 for y in any one of the original equations and you get:
x= 3
2 answers