Answer:
Parentheses can change the result of the answer. If you want to add 4 and 0.95 first, then multiply that number by 3, then you need parentheses.
Explanation:
When you are given the question 3 X 4 + 0.95, it has to types of operations. People solve using the order PEDMAS:
Parentheses,
Exponents,
Division and Multiplication,
Addition and Subtraction.
Since there are no parentheses or exponents, the solver will do multiplication first, then addition.
3 X 4 + 0.95 Multiply first
= 12 + 0.95 Now add
= 12.95 Answer without parentheses
If you add parentheses around 4 + 0.95, the answer would change. According to PEDMAS, the parentheses must be solved before anything else.
3 X (4 + 0.95) Add inside parentheses
= 3 X (4.95) Now multiply
= 14.85 Answer with parentheses
If you added parentheses around 3 X 4, the answer would not change, because you still multiply first.
(3 X 4) + 0.95 Solving parentheses first
= 12 + 0.95 Add
= 12.95 Answer same as original