Using substitution to evaluate expressions

Front

Evaluate 4y if y = 3

Back

12

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

3x + 8 if x = 2

Back

14

Front

Evaluate -2x if x = 10

Back

-20

Front

Evaluate 8a - b if a = 10 and b = 6

Back

74

Front

Evaluate 7y - 3y for y=2

Back

8

Front

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

Back

44

Front

6a - 3d when a = 1, d = 2

Back

0

Front

Evaluate expression if a=3: 18 ÷ 2a

Back

3

Front

The sum of m and k

Back

m + k