Solving Equations Using Algebra

3x = 6

-3x = 6

2x + 1 = 5

-2 = 3x + 1

• x = 1

• x = -1

• x = 0

• x = 2

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20

• 24

• 44

• 4

Solve for y

3x - 2y = 25

Mathematical Equivalence

ON

Solve for y: 
8x + 4y= 16

Mathematical Equivalence

ON

?

Mathematical Equivalence

OFF

3x + 1 = -2

• x = 0

• x = -1

• x = 1

• x = -3

• x = 3

• x = -7

• x = 7

• x = -3