Write and solve an equation to find the number: The sum of three times a number and 12 is 45.
2 answers:
Answer:
Step-by-step explanation:
Equation
3x +12 = 45 Subtract 12 from both sides
Solution
3x + 12 - 12 = 45 - 12
3x = 33 Divide by 3
3x/3 = 33/3
x = 11
Step-by-step explanation:
3x+12=45
3x=45-12
3x=33
3x/3=33/3
x=11
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The median of the set of numbers is 5.
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Answer:
5k + 9
Step-by-step explanation:
3k + 4 + 2k + 5 =
= 5k + 9
