The sum of twice a number and 4 is 12.
2 answers:
The answer is three because 4×3 = 12
Answer:
Unknown number = 4
Step-by-step explanation:
Let x = the unknown number
2x + 4 = 12
Subtract 4 from both sides
2x = 8
Divide by 2 on both sides
x = 4
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