Question

2m+n=-5
2m+3n=2
use elimination method by addition or subtraction

Answer 1

change x to m and n to y
3 different ways here!
Solution: x = 3.25, y = -1.5.

Explanation:


Solving:

2x+y = 5
2x+3y = 2


Using Substitution Method.

Expressing x as a function of y (from the first equation) x = (5 -y)/2

Substituting this expression into the second equation:

2(5+y)/2+3y = 2

Simplifying this expression:

4y = -6

or

y = -1.5

Now, substituting y = -1.5 back into the x expressed as a function of y:

x = (5-y)/2 = 3.25