Simplifying Expressions Using Substitution

Substitute these values for B - A ; A = 7 , B = 2

Answer explanation

positive 2 subtract 7 is going to be -5

Substitute then evaluate for: 8a - c if a = 2 , c = 4

• 12

• 6

• 0

• 20

Answer explanation

8 x 2 = 16 then 16 - 4 = 12

Find the value of 4a + 1 when a = 6

• 47

• 11

• 1

• 25

Answer explanation

it's 4 x 6 = 24 24 + 1= 25

Evaluate 2r + 1      if   r = 3

• 6

• 5

• 7

• 8

Simplify: 15w - 3n + 4m

when w = 2, n = (-7), m = 3

• -63

• 63

• 21

• The answer is not here.

Simplify the expression 4a + 2b - 3a when a = 2 and b = 5.

• 12

• -2

• 10

• 0

Simplify the expression 2(x + 3) - 4x when x = 2.

• 2

• -2

• 4

• 6

Simplify the expression 3a - 2b + 4a when a = 1 and b = 3.

• -2

• 5

• 1

• 7

Simplify the expression if m = -7 and n = 4:

5m + 9n

• 71

• 1

• -1

• -71

Evaluate 4y  if       y = 3

• 7

• 12