Samantha wrote these steps when solving an equation.
step 1 3 + 2(x + 5) = x +18
step 2 3 + 2x + 10 = x +18
step 3 2x + 3 + 10 = x +18
step 4 2x + 13 = x +18
step 5 2x = x + 5
step 6 1x = 5
step 7 x = 5

Which property justifies the work shown between step 6 and step 7?

A) Multiplication Property
B) Inverse Property of Multiplication
C) Distributive Property
D) Identity Property of Multiplication

Question

Samantha wrote these steps when solving an equation.
            step 1      3 + 2(x + 5) = x +18
            step 2      3 + 2x + 10 = x +18
            step 3      2x + 3 + 10 = x +18
            step 4      2x + 13 = x +18
            step 5      2x = x + 5
            step 6      1x = 5
            step 7      x = 5
      
Which property justifies the work shown between step 6 and step 7?

A) Multiplication Property 
B) Inverse Property of Multiplication 
C) Distributive Property 
D) Identity Property of Multiplication

anonymous · Answer

D

anonymous · Answer

The identity property of multiplication, also called the multiplication property of one says that a number does not change when that number is multiplied by 1.