STAAR Release 7.11a Equations

​ (a)   ​ ​ (b)   ​ (c)   ​ ​ (d)   ​ (e)  

• 5x
• -
• +
• 4
• 10
• 14
• x
• 5

The first step to solving this would be to ​ ​ (a)   to both sides. The next step would be to ​ ​ (b)   from both sides. The final answer is, x = ​ (c)  

• multiply 3.25
• subtract 1
• 3.51
• divide 3.25
• add 1
• 1.64

Solve for x.

x - 15 = 18

Mathematical Equivalence

ON

Solve the equation.

45 = x - 20

Mathematical Equivalence

ON

Solve for x.

34 = 16 + x

Mathematical Equivalence

ON

Mathematical Equivalence

OFF

• x = 4

• x = 8

• x = 16

• x = 32

An equation is modeled below. Which value of x makes this equation true?

• 3

• 4

• 2

• 8

The model represents an equation. What is the solution to the equation? ​ (a)  

• -3
• 3
• 7
• -7

Tags

7.11.A

Walter and Brian each have a CD collection. - The number of CDs in Walter’s collection can be represented by x. - The number of CDs in Brian’s collection is 3 times the number in Walter’s collection. - The total number of CDs in both collections is 144. What is x, the number of CDs in Walter’s collection?

• 108

• 48

• 72

• 36