How do you evaluate #16 ÷ 4 * 2 - 7#?

1 Answer
George C.
Jun 15, 2015

Use PEMDAS:

#16-:4*2-7 = 16-:4*2-7 = 4*2-7 = 8-7 = 1#

Explanation:

Use the PEMDAS mnemonic to provide the order of application of operations:

Parentheses
Exponents
Multiplication & Division
Addition & Subtraction

We have no parentheses, exponents or addition to process, so start with multiplication and division, then subtraction:

#color(red)(16-:4)*2-7 = color(red)(4*2)-7 = color(red)(8-7) = 1#

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