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[72:(48-x)+58]:10=14

Răspuns :

[tex]72:(48-x)+58=14*10 \\ 72:(48-x)+58=140 \\ 72:(48-x)=140-58 \\ 72:(48-x)=82 \\ 48-x= \frac{72}{82}= \frac{36}{41} \\ x=48- \frac{36}{41}= \frac{1932}{41}=47 \frac{5}{41} [/tex]
72 : (48 - x) + 58 = 14 * 10
72 : (48 - x) = 140 - 58
72 = 82(48 - x)
72 = 3936 - 82x
82x = 3936 - 72 
x = 3864 : 82
x = 47,12
sau
x = 47 si 10/82
x = 47 si 5/41