FTCE Math Test Prep - MathHelp.com - 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 . Before multiplying two fractions together by multiplying across | |
| 00:22 | their enumerators and multiply across their denominators . You should | |
| 00:26 | always try to cross cancel as your first step . | |
| 00:31 | So in this problem the 15 and five cross cancel | |
| 00:36 | . 23 and one . The 14 and four also | |
| 00:44 | cross cancel . 27 and two . Also watch out | |
| 00:53 | for your signs . In this problem we have a | |
| 00:56 | negative times of positive so we know that our answer | |
| 01:01 | will be negative . Now we can multiply across the | |
| 01:07 | numerator and across the denominators . So we have three | |
| 01:12 | times seven which is 21 and two times 1 which | |
| 01:19 | is to . So our answer is negative . 21 | |
| 01:25 | halves . Be very careful with your signs . |
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