Use the Commutative Property to determine the missing step in proving the equivalence of 12a+10+a=10+a+12a.
Step 1: [missing]
Step 2: 10+13a=10+13a
Step 3: The expressions are equivalent because they both equal the same value.
(1 point)
Responses
10+12a+a=10+13a
d plus 10 plus a equals 10 plus a plus d
12a+10=10+12a
d plus 10 plus a equals 10 plus a plus d
12a+10+a−10=10+a+12a−10
d plus 10 plus a equals 10 plus a plus d
12a+10+a−a=10+a+12a−a
d plus 10 plus a equals 10 plus a plus d