Equations Review

What is the ultimate goal when we are solving an equation?

• To move the numbers around
• To isolate the variable
• To find the answer
• To do math

Solve the equation below:

• k = 152
• k = 176
• k = 5
• k = 27

Solve:
5y+34 = -2(-7y+1)

• y = -4
• y = 9
• y = 4
• y = 36/19

6(5g+ 2)=30g

• g=2
• g=12
• all real numbers
• no solution

18x - 5 - 16x = 15

• x = 5
• x = 10
• x = -5
• x = -10

Tags

CCSS.8.EE.C.7B

What is the first step to solve the following equation:
28 = -7 + 7x

• Divide both sides by 7
• Subtract 7 from both sides
• Subtract 28 from both sides
• Add 7 to both sides

Tags

CCSS.7.EE.B.4A

What is the first step in solving the following equation:
23 - 14 + 2x + 7x = -36

• Undo any subtraction or addition
• Undo any multiplication or division
• Distribute
• Combine Like Terms

Tags

CCSS.8.EE.C.7B

Solve.
(2x - 3) / 4  = 9

• x = 24
• x = 12
• x = 17.5
• x = 19.5

*

• 6
• 5
• -5
• 6

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

• 1.2
• 6
• -6
• 7.5