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Sam Henry
Mathematics
4 October, 11:34
Solve for m and check your solution. 5/7m=-55
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Bianca Goodman
4 October, 11:40
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5/7m=-55
1.) First of all they are multiplying so you do the opposite. In this case you divide 5/7 by both sides.
-55divided 5/7
Changes to
-55/1 x 7/5. See if you can cross cancel in this case you can. The - 55 changes to a - 11 and the 5 changes into a 1
Reminder: Remember when you divided by fractions you change the sign to a multiplication sign and then flip the next fraction over.
2.) After dividing you should get - 77/1 or if you didn't cross cancel then you would get - 385/5.
3.) If you get - 385/5 then you would have to do 385 divided 5 and you would get - 77.
4.) Checking your answer is 5/7•-77=-55.
5/7•-77 changes to 5/7•-77/1 and you can cross cancel it where the - 77 changes to a - 11 and 7 changes to a 1.
5.) You should get - 55. If you didn't cross cancel then you would have gotten - 385/77
6.) If got - 385/77 then you would do - 385 divided by 77. Your then should get - 55.
7.) Look to see if the answer you got when you checked matches the answer in the problem. - 55=-55
8.) Your answer is - 77
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