First, I would reduce 3/15 and 15/21 to simplest form.
1/5, 5,7
You could list multiples of all your denominators. But in this case, because two of your denominators are already prime (5 and 7), you can just multiply the three denominators together.
5 x 7 x 8
This will give you the LCD
I have a feeling its the second one
Answer:
The correct answer is B
Step-by-step explanation:
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Answer:
12
Step-by-step explanation:
5(x-1) +3x = 7(x + 1)
5 × x - 5×1 + 3x = 7 × x + 7 × 1
5x-5+3x=7x+7
8x-5=7x+7
8x-7x=7+5
x=12
hope it helps you!!
Answer: (3, -2)
Step-by-step explanation:
