Add 4x to both sides and get
13 = 1 + 3x
12 = 3x [from subtracted 1 from both sides]
x = 4 [from dividing 3 from both sides]
therefore your answer would be x = 4
Answer:a is the answer I’m sure it is
Solution :
Volume of ball = Volume of outer ball - Volume of inner ball

Now, density of iron is, d = 7300 kg/m³.
So, mass of iron ball is :

Hence, this is the required solution.
2.50
it says it has to be 50 characters long so I’m going to write random things
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