daniel4280 daniel4280

23-03-2016
Mathematics

contestada

what is 8(x+12)=2(5x+9)

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Аноним Аноним

23-03-2016

8(x+12)=2(5x+9)
8x+96=10x+18
2x+18=96
2x=78
x=39

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JZISHERE JZISHERE

23-03-2016

8(x+12)=8x+96
2(5x+9)= 10x+18
8x+96=10x+18
-18 -18
---------------------
8x+78= 10x
- 8x -8x
-----------------
78=2x
78÷2=36

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