Mathematics, 08.12.2021 20:30 kad3n
Alberto uses the steps below to solve the equation One-half x minus 3 equals 7.
Step 1: One-half x minus 3 plus 3 equals 7 plus 3
Step 2: One-half x plus 0 equals 10
Step 3: One-half x equals 0
Step 4: 2 (one-half) x equals 2 (10)
Step 5: 1 x equals 20
Step 6: x equals 20
Which justifies Step 6 of his work?
the addition property of equality
the identity property of addition
the multiplication property of equality
the identity property of multiplication
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Alberto uses the steps below to solve the equation One-half x minus 3 equals 7.
Step 1: One-half x...
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