Solve Systems by Substitution
y = -2
4x - 3y = 18
Substitute the appropriate expression into theother equation of this system.
4x-3(      ) = 18
(
The first step is shown.
Solve the system of equations by substitution. 
y = -2
4x - 3y = 18
4x - 3(-2) = 18
,
)
2(          ) -3y= -1
Substitute the appropriate expression into theother equation of this system.
2x - 3y =  -1
x = y + 1
(
The first step is shown.
Solve the system of equations using substitution.
2(y + 1) - 3y= -1
2x - 3y =  -1
x = y + 1
,
)
Substitute the appropriate expression into theother equation of this system.
-2x-3(         )=-7
y = 6x - 11
-2x - 3y = -7
(
The first step is shown.
-2x - 3(6x - 11) = -7
Solve the system of equations using substitution.
y = 6x - 11
-2x - 3y = -7
,
)
6x-5(           ) = 12
y = -2x + 20
6x - 5y = 12
Substitute the appropriate expression into theother equation of this system.
(
The first step is shown.
y = -2x + 20
6x - 5y = 12
6x - 5(-2x + 20) = 12
Solve the system of equations using substitution.
,
)
-3(         ) - 3y = -15
Substitute the appropriate expression into theother equation of this system.
x = -3y + 1
-3x - 3y =  -15
(
-3(-3y + 1) - 3y = -15
The first step is shown.
Solve the system of equations using substitution.
x = -3y + 1
-3x - 3y =  -15
,
)
Students who took this test also took :

Created with That Quiz — a math test site for students of all grade levels.