The original number is 15.
Let’s work it out.
First, divide.
21 divided by 3 is 7.
Now, add.
8 + 7 = 15
This is true because...
15 - 8 = 7
Hope this helps, have a great day, stay safe and positive.
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Answer:
16
Step-by-step explanation:
just use a calculator
Answer:
12x=-1
Step-by-step explanation:
if q(x)=4, plug -4 because that equals -4.
-4=12x-3
add -3 to each side
-1=12x
Answer:
5
Step-by-step explanation:
3² + 4² = 25
√25 = 5
use the formula