Respuesta :
ok you can use subsitution for this one
since y=2x+6
subsitute 2x+6 for y
3x-(2x+6)=6
3x-2x-6=6
add like terms
x-6=6
add 6 to both sides
x=12
subsitute
y=2x+6
y=2(12)+6
y=24+6
y=30
x=12
y=30
(x,y)
(12,30)
since y=2x+6
subsitute 2x+6 for y
3x-(2x+6)=6
3x-2x-6=6
add like terms
x-6=6
add 6 to both sides
x=12
subsitute
y=2x+6
y=2(12)+6
y=24+6
y=30
x=12
y=30
(x,y)
(12,30)
y=2x=6
3x-y=6
Solve y=2x+6 for y
Substitute 2x=6 for y in 3x-y=6
3x-y=6
3x-(2x+6)=6
Simplify both sides of the equation
x-6=6
Add 6 to both sides
x-6+6=6+6
x=12
Substitute 12 for x in y =2x+6
y=2x+6
y=(2)(12)+6
Simplify both sides of equation
y=30
Answer : y=30 and x =12
I hope that's help !