Solve for Variable Tile

Solve for x.

38 - 4x = 6x - 12

• x = 5

• x = - 5

• x = 10

• x = 50

Solve for x.

12x - 12 = 8x + 2

• x = 4.5

• x = 3.5

• x = 5.5

• x = -6

• x = 8

• x = -8

• x = 4

• x = -4

2.25x + 5 = 13.5x + 14

• x = -0.8

• x = 1.8

• x = 2.1

• x = -0.2

Mathematical Equivalence

ON

Answer explanation

Tags

7.11.A

Solve for x:
2x + 5 = 12

• 7

• 3

• 3.5

• 8.5

An equation is modeled below using algebra tiles. Which value of x makes the equation true?

Mathematical Equivalence

ON

Which equation does this set of algebra tiles represent?

• -x + 7 = 16

• -x + 7 = 19

• 6x + 7 = 19

• 6x + 7 = 13

Answer explanation

Tags

7.11.A

Which equation does this set of algebra tiles represent?

• -x + 7 = 16

• -x + 7 = 19

• 6x + 7 = 19

• 6x + 7 = 13

Answer explanation

Tags

7.11.A

Margo can purchase tile at a store for $0.79 per tile and rent a tile saw for $24. At another store she can borrow the tile saw for free if she buys tiles there for $1.19 per tile. How many tiles must she buy for the cost to be the same at both stores?

• 60 tiles

• 50 tiles

• 70 tiles

• 86 tiles