Question

X+y=16
y=3x=4
find the solution using substitution

Answer 1

Answer: x=3 ; y=13

Explanation:

1. isolate y from equation to substitute into the second equation

y= 16-x ---> (16-x) = 3x+4

2. move to one side and solve for x

4x=12 --> x=3

3. plug in x value to solve for y

3+y=16 or 3(3)+4

y=13