Answer:
PEMDAS/Order of Operations
Explanation:
Order of Operations, or PEMDAS states that you must solve mathematics in the following order:
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
Instead of completing 4+7•3 by going left to right, follow the order of PEMDAS.
Multiplication is the first operation in PEMDAS that is in the problem, so do that first (4+21)
Now you can add and your answer should be 25 :)