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alberto uses the steps below to solve the equation
which justifies step 6 of his work?
3* - 3 =
the addition property of equality
the identity property of addition
the multiplication property of equality
the identity property of multiplication
step 1:
x - 3 + 3 = 7 + 3
step 2: =x + 0 = 10
step 3:
x =
step 4: * = 2(10)
step 5: 1x = 20
step 6: x = 20

I gotcha bud, the answer is 4. the identity property of multiplication

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The identity property of multiplication

Step-by-step explanation:

If a, b and c are any real numbers,

By addition property of equality,

a = b ⇒ a + c = b + c,

By identity property of addition,

a + 0 = a,

By multiplication property of equality,

a = b ⇒ a × c = b × c,

By identity property of multiplication,

a × 1 = a

Thus, it is clear that,

'The identity property of multiplication' justifies Step 6 .

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step-by-step explanation:

6x9