Question

can you show me how to solve 2x-y=3
4x+5y=6
using the substitution method. I am stuck on this question for my math hw. pretty please!

Answer 1

1. Solve for a variable for ONE of the equations - Get x, or y, by its self
2. Plug in the equation you found for the variable of the other equation & solve. You will get a value for the variable.
3. Put this back into the equation you found in step 1 and get the answer for the other variable.

Example:
x+y = 12
y - 6 = 2x

1. x = 12-y
2. y - 6 = 2(12-y)
y - 6 = 24 - 2y
3y - 6 = 24
3y = 30
y = 10
3. x= 12- 10
x = 2

Answer: x = 2, y = 10. Now try and use these steps for your problem. :)