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​One​ ​of​ ​the​ ​steps​ ​Dave​ ​used​ ​to​ ​solve​ ​an​ ​equation​ ​is​ ​shown​ ​below. 3x​​+​​9​​=​​21 3x​​+​​9​​–​​9​​=​​21​​–​​9

​One​ ​of​ ​the​ ​steps​ ​Jamie​ ​used​ ​to​ ​solve​ ​an​ ​equation​ ​is​ ​shown​ ​below. -5(3 x ​ ​+​ ​7)​ ​=​ ​10 -15 x ​ ​+​ ​(-35)​ ​=​ ​10

​One​ ​of​ ​the​ ​steps​ ​Ellen​ ​used​ ​to​ ​solve​ ​an​ ​equation​ ​is​ ​shown​ ​below. 9x​​=​​27 9x​​÷​​9​​=​​27​​÷​​9

​One​ ​of​ ​the​ ​steps​ ​Brad​ ​used​ ​to​ ​solve​ ​an​ ​equation​ ​is​ ​shown​ ​below. 6x​​+​​(3x​​+​​2)​​=​​38 (6x​​+​​3x)​​+​​2​​=​​38

​One​ ​of​ ​the​ ​steps​ ​Clive​ ​used​ ​to​ ​solve​ ​an​ ​equation​ ​is​ ​shown​ ​below. 5x​​+​​4​​+​​7x​​=​​16 5x​​+​​7x​​+​​4​​=​​16

Distributive Property

Additive Inverse Property

Associative Property

Multiplicative Property

Commutative Property