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Jamal uses the steps below to solve the equation 6x – 4 = 8.

Step 1: 6x – 4 + 4 = 8 + 4
Step 2: 6x + 0 = 12
Step 3: 6x = 12
Step 4: StartFraction 6 x Over 6 EndFraction = StartFraction 12 Over 6 EndFraction
Step 5: 1x = 2

Step 6: x = 2

Which property justifies Step 3 of his work?

A. the identity property of addition
B. the identity property of multiplication

1 answer

B. the identity property of multiplication

In Step 3, the property used is the identity property of multiplication, which states that any number multiplied by 1 equals the original number. In this case, 6x can be simplified to x because 6 multiplied by 1 is equal to 6.