Maths Lessons - MathHelp.com - 1000+ Online Maths Lessons - By MathHelp.com
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| 00:0-1 | The following is a selected video from your teacher.com where | |
| 00:03 | you can browse over 450 complete math lessons with example | |
| 00:07 | videos , interactive practice problems , self tests and more | |
| 00:11 | . Try a complete lesson today at your teacher dot | |
| 00:14 | com . According to our order of operations , multiplication | |
| 00:20 | and division are to be done in order of appearance | |
| 00:25 | as we read the problem from left to right . | |
| 00:28 | So in this problem , since the division appears before | |
| 00:32 | the multiplication as we read the problem from left to | |
| 00:36 | right , We must first divide negative 1 3rd By | |
| 00:42 | -4/3 . And remember dividing by a fraction means the | |
| 00:47 | same thing as multiplying by the reciprocal of that fraction | |
| 00:54 | So we can rewrite negative 1/3 divided by negative 4/3 | |
| 00:59 | as negative one third times negative 3/4 and we bring | |
| 01:09 | down our times negative 12 7th . So multiplying our | |
| 01:17 | first two fractions together notice that we have a negative | |
| 01:21 | times a negative which is a positive in our threes | |
| 01:28 | cross , cancel too one and one . So we | |
| 01:33 | have positive one over four , bringing down our times | |
| 01:44 | negative 12 sevens . We now have a positive times | |
| 01:50 | and negative , which is a negative In our 12 | |
| 01:55 | and four across , cancel 23 and one . So | |
| 02:01 | we have negative three over seven , which is our | |
| 02:10 | final answer . |
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