How do you solve 12y-3x=-1 and x-4y=1 using the substitution method?
1 Answer
In order to solve this problem using the substitution method, we'll need to eliminate one of the variables, either
To do that, start by isolating
Step 1
Isolate
x - 4y = 1
x=1 + 4y
Now we know that once we find the value of
Step 2
Substitute the value of
12y - 3x = -1
12y -3(1+4y)= -1
Then, simplify it:
12y -3(1+4y)= -1
12y - (3 + 12y) = -1
12y -3 - 12y = -1
However,
Since