x = 7 + 3 * 2;
here, x is assigned 13, not 20 because operator * has higher precedence than +, so it first gets multiplied with 3*2 and then adds into 7.
Here, operators with the highest precedence appear at the top of the table, those with the lowest appear at the bottom. Within an expression, higher precedence operators will be evaluated first.
Note : Unary, Conditional & Assignment operators are evaluated from Right to Left, Remaining operators are from Left to Right.