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?

Identity element property

Step-by-step explanation:

The property that justifies the step 3 is the identity element property.

Mathematically, the identity element is that number such that performing an arithmetic operation such as addition or multiplication with the number gives back the number we started with

For addition, the identity element is 0

while for multiplication, the identity element is 1

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm