Algebra Substitution

If x = 3,

calculate x + 3

• 3x

• 6

• 6x

• 3

if x = 4,

calculate 2x + 5

• 2 x 4 +5

• 24 + 5

if y = 5,

Calculate 2(y - 3)

• 2 x (5 - 3)

• 2 x 53

• 10y - 3

let t = 20,

calculate t(3 + 2t)

• 60 + 40t

• 20 x (3+20)

• 20 x (3 + 2x20)

let x = 4 and y = 7,

Calculate x + 2y

• 4 + 14y

• 4 + 2 x 7

• 4 + 27

let x = 6 and y = 3,

calculate 3x - 4y

• 18x - 12y

• 6(x - y)

• 12

• 3 x 6 - 4 x 3

let a = 1 and b = 10,

calculate 2a + 4b

• 36

• 21 + 410

• 2 x 1 + 4 x 10

• 28

let c = 5 and d = 2,

calculate c + d

• 7

• 52

• 36

• 24

let a = 4 and b = 6,

calculate 4a + 2b

• 4 x 4 + 2 x 6

• 44 + 26

let c = 5 and d = 2,

calculate cd

• 10

• 52

• 36

• 24