Answer:
x=128/3 y=167/3
Step-by-step explanation:
Step 1: Solve y=x+13 for y:
y=x+13
Step 2: Substitute x+13 for y in y=4x−115:
y=4x−115
x+13=4x−115
x+13+−4x=4x−115+−4x(Add -4x to both sides)
−3x+13=−115
−3x+13+−13=−115+−13(Add -13 to both sides)
−3x=−128
-3x/-3=-128/-3
x=128/3
Let's Substitute 128/3 for x in y=x+13:
y=x+13
y=128/3+13
y=167/3 (Simplify both sides of the equation)