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lubasha [3.4K]
3 years ago
13

Five times the sum of some number plus 3 is equal to 7 times the number minus 1.

Mathematics
1 answer:
Alexandra [31]3 years ago
4 0
5(x+3)=7x-3 which is the equation, then we solve for it, and the answer is 9
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First we know that,

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y=y because of reflex property

there are 360 degrees in a circle so..

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so each 2 of the angles are...(40*3+15)=135

Then your new equation is

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Hope this helps :)


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