El numero es 13 porque 13x3= 39 y 39-9= 30.
Answer:
When a number is unknown, it's always represented by a letter - usually x. The product of four times that number would be 4 times x, or 4x. Two less than four times the number would, therefore, be 4x - 2.
Step-by-step explanation:
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With two dice, you can get sums of between 2 and 12,
