Replacing Numbers with Letters

12 + n = ______________
n=4

• 18

• 20

• 16

• 12 + 4n

y - 6=__________
y=10

• 4

• 1

• 16

• 10

2(b) + 8= __________
b=2

• 12

• 10

• 16

• 8

2(c) + 5=_______________
c= 6

• 15

• 17

• 13

• 11

Translate the phrase into an algebraic expression: "Seven less than twice a number."

twice the sum of 2 and c

• 2 x 2 + c

• 2 + c

• 2(2 + c)

• (2 + c) 

3(c) -11= ___________
c= 5

• -3

• 7

• 9

• 4

(c-10) + 8= ________
c= 10

• 8

• 0

• 2

• 4

a number decreased by 10

• 10-n

• 10/n

• n-10

• 10n

2(b) - 3=______
b=5

• 2

• 10

• 1

• 7