It is given in the question that, a rocket travels 2.8x10^4 km h^-1.
It means in one hour, the rocket travels
And we have to find how much the rocket travels in 5 hours, and for that we have to do multiplication, that is
Addition, subtraction, multiplication.
Addition: The addition of two integers produces another integer.
Subtraction: The subtraction of two integers produces another integer.
Multiplication: The product of two integers is an integer.
Division between two integers can produce a rational number that is not in the set of integers e.g. 1/3
This only includes the four basic arithmetic operations, you can include exponentiation and the modulo operation if you want to for the same reasons as above.
Answer: 1.) x - 2y = 4 , add 2y to both sides. ---> answer is, X = 2y + 4
2.) 2x - 6y = 8, Add 6y to both sides, then divide both sides by 2. --> answer is, X = 3y + 4
Given
1. 4 x 1/7
2. 12 x 2 5/6
procedure
1. The answer is 4 x 1/7 is less than 4
2. The answer is 12 x 2 5/6 is greater than 12
