Question

Solve the system by the substitution method
x-3y=3
y=2x-16

Answer 1

let x = 3y+3

substitute it into the 2nd equation

3x+3 = 2x -16

subtract 3 from both sides

3x = 2x - 19

subtract 2x from boht sides

x = -19

substitute this into the 1st equation and solve for y

Answer 2

if i substitue this into the first that leaves a decimal