What is the number
A number is tripled, then 7 is subtracted from the result. The final answer is double the original number plus 5. What is the number?
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Let the number be:
ReplyDeletex
Step 1: Tripled, then subtract 7
3x − 7
Step 2: This is equal to double the number plus 5
So,
3x − 7 = 2x + 5
Step 3: Solve the equation
3x − 7 = 2x + 5
Subtract 2x from both sides:
x − 7 = 5
Add 7 to both sides:
x = 12