Răspunsuri

2014-08-10T14:46:20+03:00
X-suma initiala

1/4 din x=  1/4 * x=  x/4 - prima data

x-x/4=  (4x-x)/4=  3x/4 -restul

1/6 din 3x/4=  1/6 *3x/4=  x/8 -a doua oara

3x/4- x/8=  (6x-x)/8=  5x/8 -noul rest

1/3 din 5x/8 +120=  1/3 * 5x/8=  5x/24 +120 -a treia oara

5x/8 -(5x/24 +120)=  (15x-5x+960)/8=  (10x+960)/8 -noul nou rest

(10x+960)/8= 600

10x+960= 8*600

10x+960=4800

10x=4800-960

10x=3840

x=384 lei


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