Rational One Step Equations

x + ⅚ = ⅔

• x = -⅙

• x = ⅙

• x = 1½

• x = -1½

y/3=12. What is being done to Y and what do you do to isolate the variable?

• Y is being divided by 3, so you need to divide both sides by 3.

• 3 is being added to Y, so you need to subtract 3 from both sides.

• Y is being divided by 3, so you need to multiply both sides by 3.

• Y is being divided by 3, so you need to add 3 to both sides.

20 = 1/5n

• 100

• 50

• 4

• 2

32/33 = 4/11w

• 6/11

• 11/6

• 3/8

• 8/3

Solve the equation:
x - 5.5 = 10.5

• x = 16

• x = -15

• x = 5

• x = -5

-15x = -255

• 17

• -17

• -240

• -270

• y = 9

• y = -9

• y = 17

• y = -17

Why do you divide by 5 on both sides?

• To undo division, you must multiply.

• To balance the equation, you must divide by 5 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 5 on both sides.

Why do you multiply by 8?

• To undo division, you must multiply.

• To balance the equation, you must divide by 8 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 8 on both sides.

Why do you multiply by 8 on both sides?

• To undo division, you must multiply.

• To balance the equation, you must divide by 8 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 8 on both sides.