anna121williams anna121williams
  • 24-09-2019
  • Mathematics
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The difference of a number and 12 is 30

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koiuki koiuki
  • 24-09-2019

Answer:

42

Step-by-step explanation:

Difference is substitution, so a number (x) minus 12 equals 30

x-12=30

Add 12 to both sides

x=42

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