How to solve algebraic expression using pemas(please excuse my aunt sally)

2 answers:

ivann1987 [24]3 years ago

7 0

Example: 3(2+4)-6

You would add 2 and 4 first, since they are in parentheses. Then you'd have:

3(6)-6

Then you would multiply 3 and 6, since multiplication comes before subtraction in PEMDAS. so then you'd end up with:

18-6

Which, 18-6=12.

Hope this is what you were asking for, and I hope this helps!! :)

cupoosta [38]3 years ago

3 0

Its actually PEMDAS you forgot the D.
P-parentheses () E-exponents M-multiplication D-division A-addition S-subtraction. <span />

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A person runs 1/8 mile in 1/64 hour.<br> The person's speed is (BLANK) miles per hour.

snow_tiger [21]

Answer: The person's speed is 8 miles per hour.

Step-by-step explanation:

To solve we want to convert the $\frac{1}{8}$ and $\frac{1}{64}$ proportionally for the number of miles per hour. We know that multiplying a fraction by its reciprocal will equal 1. So let's do that for the value of the hour.