X/5 + 7 = 14
Subtract 7 from each side:
X/5 = 7
Multiply both sides by 5:
x = 7 * 5
X = 35
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.
1) 4, because 4/5 is closer to 4 than it is 3 1/2.
2) 100
3) 5
