Math Multiple Step Equations

Solve:

2(2x + 3) = -6(x + 9)

• x = -2

• x = 6

• x = -6

• x = 2

How many solutions does this equation have?

• No Solution

• Infinite Solutions

• One Solution

Tags

CCSS.8.EE.C.7A

Solve: 5x - 14 = 8x + 4

• 6

• -6

• 9

• -9

How many solutions does 3(2x - 3) = 6x + 12

• One Solution

• No Solutions

• Infinite Solutions

Tags

CCSS.8.EE.C.7A

Joey has to solve the system of equations using substitution. He has completed the work shown. What should be his next step?

• Nothing. He is done.

• He needs to write his solution as an ordered pair (0, 2).

• He needs to plug back in to one of the equations to find x.

• He needs to check his work to make sure he made no mistakes.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Sierra has to solve this system of equations using elimination. What should be her FIRST step?

• Isolate the x in the second equation so that she can substitute into the first equation.

• Solve both equations for y so that she can easily fraph the equations and find the point of intersection.

• Multiply the second equation by 3 so that the x's have the same coefficient to then add the two equations together.

• Multiply the second equation by -3 so that the x's have opposite coefficients to then add the two equations together.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following systems of equations using substitution:

5x - 2y = 3

y = 2x

• (6, 3)

• (1, 2)

• (3, 6)

• (2, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using substitution:

2x+8y=4

4x+16y=-4

• (-2, 1)

• (1, 2)

• Infinite Solutions

• No solutions

Tags

CCSS.8.EE.C.8B

To eliminate the y variable, . . .

• multiply the top equation by 1

• multiply the bottom equation by 3

• multiply the bottom equation by -3

• multiply the top equation by 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system by elimination

• (0,2)

• no solution

• (2,0)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6