CristianoS201319 CristianoS201319
  • 28-10-2022
  • Mathematics
contestada

What is the solution to × + 9 = 21A. × = 18B. × = 9C. × = 30D. × = 12

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BailynnW259081 BailynnW259081
  • 28-10-2022

× + 9 = 21

subtract 9 from both sides

× + 9 - 9 = 21 - 9

× = 21 - 9

= 12

Option D

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