Answer:
3 + 3 × 4 = 15
Step-by-step explanation:
So, we have:
3 + 3 × 4
First, we'll multiply the 3 and 4:
3 + (3 × 4)
And we get:
3 + 12
Now, we add them:
3 + 12 = 15
You might be asking, why do the multiplication first? Because there are rules or laws about how to solve expressions like this, called PEMDAS or MDAS.
MDAS stands for:
- Multiplication
- Division
- Addition
- Substraction
PEMDAS stands for:
- Parentheses
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
MDAS is used when an expression or equation has more than one operation. It is part of the Order of Operations, a collection of rules that gives a sequence for simplifying mathematical operations. The same goes for PEMDAS.
As you can also see in MDAS, the first word that comes is multiplication. That means, we have to do the multiplication first IF there are expressions that need some multiplying, and there is!
Next, comes division. You can say, "But you didn't do that one!", that's because there is no expression that needs dividing.
Then, addition. There is an expression that needed addition. SO we did that one.
Finally, subtraction. Again, there is no expression that needed subtracting so we didn't do it.
Hope this helps you! ^-^