Missing number puzzle
A number is multiplied by 4, then 7 is added. The result is the same as when the number is multiplied by 6, then 3 is taken away.
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Let the number be x
ReplyDelete4x + 7 = 6x - 3
Add 3 to both sides:
4x + 10 = 6x
Subtract 4x from both sides:
10 = 2x
Divide both sides by 2:
x = 5
Final Answer: 5