Order of operations

Question

5²x 2-42 / 6+18=

Answer 1

5²x 2-42 / 6+18=

PEMDAS-Please excuse my dear aunt sally. The mnemonic device can help you remember which order to evaluate expressions in.

Parenthesis? No

Exponent? yes-evaluate 5^2 =25-->25x2-42/6+18

Multiplication? yes--evaluate 25x2=50-->50-42/6+18

Division? yes--evaluate 42/6=7--> 50-7+18

Addition and subtraction evaluated in the order they appear thus 50-7=43 and 43+18=61

Answer 2

5²x 2-42 / 6+18=

Evaluate the power: 25x2-42/6+18

Multiply the numbers: 50-7+18

Calculate sum and difference: 61

Solution: 61