Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x,y).

x-2y=0
4x-3y=15

Answer 1

Same kinda question - try this one yourself - can you?

Answer 2

I dont understand how to do it. Ive looked everywhere to try to figure out and it doesnt matter how much theyll tell me how to do it, I will never understand because its confusing. And when I try by myself, I always come up with a wrong answer and I get the answer wrong on my schools computer.

Answer 3

x - 2y = 0 add 2y to both sides
x = 2y

Now substitute this into the second equation
4x - 3y = 15
4(2y) - 3y = 15 simplify
8y -3y =15 combine like terms
5y = 15 divide by 5
y = 3

Now plug this back into the original equation
x - 2y = 0
x - 2(3) = 0 simplify
x - 6 = 0 now add 6 to both sides
x = 6

So the answer is (6,3)
You can check your answer by substituting this into the 2nd equation.
4x - 3y = 15
4(6) - 3(3) = 15
24 - 9 = 15
15=15