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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:  = 
Step 5: 1x = 2

Step 6: x = 2

Which property justifies Step 3 of his work?

the addition property of equality

the identity property of addition

the multiplication property of equality

the identity property of multiplication

 Feb 26, 2020
 #1
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Identity  property  of addition that says that

 

a  + 0    =   a

 

cool cool cool

 Feb 26, 2020

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