1st YR Algebra Substitution

If a=2 and b=4. Find the value of

2a + 4b

• 46

• 66

• 20

• -12

If a=2 and b=4. Find the value of

b - 2a

• 0

• 18

• 2

• 6

If a=2 and b=4. Find the value 3(2a + b)

• 22

• 21

• 72

• 24

If x=4 and y=3. Find the value 3x - 2y

• 8

• 6

• 9

• 7

If x=4 and y=3. Find the value 3x + y(2x + y)

• 40

• 52

• 45

• 115

If x=4 and y=3. Find the value 3xy - x

• 42

• 33

• 22

• 16

If x=4, y=3 and z=2. Find the value 2x - y + 3z

• 10

• 18

• 6

• 11

If x=4, y=3 and z=2. Find the value 3yz + 2x( x - z )

• 14

• 34

• 32

• 10

One of the options is incorrect. Select the 3 correct options.

• 3

• 17

• 7

• 15

Select the 2 correct answers

• 8

• 16

• 17

• 35