U2 / Lessons 1-9

Solving Equations

100

Solve for x. 

m/4=5

m = 24

200

Solve for y.

3y + 5 = 20

y = 5

300

Solve for a.

6a + 8 -4a=-2

a = -5

400

Solve for x.

3(x+4)=24

x = 4

500

Solve for h.

A= 1/2bh

h= (2A)/b

Equivalent Equations

100

Select all equations equivalent to x + 5 = 12

A. x = 7

B. x + 2 = 9

C. x = 17

A and B

200

Select all equations equivalent to 3x + 4 = 19.

A. 6x + 8 = 38

B. x = 5

C. 3x = 15

A, B and C

300

Select all equations equivalent to 3x + 2 = 14

A. x = 4

B. 5x = 2x + 12

C. 3x = 12

A and C

400

Select all equations equivalent to 2(x + 3) = 14.

A. x + 3 = 7

B. 2x + 6 = 14

C. 2x + 3 = 14

A and B

500

Select all equations equivalent to 4(x - 2)= 16

A. x - 2 = 16

B. x - 2 = 4

C. 4x = 24

B and C

Writing Equations

100

Select the correct equation for " A number plus 8 equals 15."

A. x - 8 = 15

B. x + 8 = 15

C. 8x = 15

B

200

Select the correct equation for " Three times a number plus 5 equals 20."

A. 3(x+5)=20

B. 3x-5=20

C. 3x+5=20

C

300

Select the correct equation for "Three times a number plus 4 equals the number plus 12."

A. 3x+4=x+12

B. 3(x+4)=x+12

C. 3x-4=x+12

A

400

Select the correct equation for "Three times the sum of a number and 4 equals 21."

A. 3x+4=21

B. 3(x+4)=21

C. 3(x-4)=21

B

500

Select the correct equation for "A gym charges a $12 sign-up fee plus $8 per visit. The total cost is $52. Let v represent the number of visits."

A. 12v+8=52

B. 8v-12=52

C. 12+8v=52

C