lesson 3.5 and 3.7

2(y+4) + 7y, y=16

8y + 7x - 2x + 4y, x = 2, y = 7

21 -8x - 4 + 9x, x = 2

What is the value of the expression 4a – 2b + 5 when a = 2 and b = 3?

• 7

• 24

• 0

• 3

What is the value of the expression 5n - 18 when n = 7?

• 39

• 7

• 17

• 27

14y - 5(3-2y), y = 1

• 9

• 1

• 136

• 85

6x - 3x + 1 + 5x + 2, x = 8

• 67

• 87

• 108

• 63

18 - 7(3-x), x = 2

• 11

• 25

• 32

• 40

10x - 3(2x + 8), x = 6

• 0

• 10

• 14

• 28

7(y+3) - 2y, y = 3

• 36

• 22

• 14

• 48