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Mathematics

Answered

what is the first step to solving 9z-21=60

Answer :

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add 21 to both sides, so you get 9z = 81

Answer Link

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Answer:

add 21 to both sides

Step-by-step explanation:

9z-21=60

9z-21+21 =60+21

9z=81

9z/9=81/9

z = 9

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