How do you solve #m+2n=1# and #5m+3n= -23#?
n = -4, m = 9
This is a system of equations, and the best way to solve this one is through substitution. Basically, we're going to isolate for 1 variable and plug it into the second question to get both variables.
Let's find m. Subtract 2n from both sides. You should get:
Now that we know what
Combine like terms.
Subtract 5 from both sides.
Divide by 7 to isolate for n.
Now, plug this back into the first equation: