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[2017-(225+5×a) :4]:3- 287=362

Va rog.


Răspuns :

[2017-(225+5*a):4]:3-287=362
[2017-225-5a:4]:3-287=362
1792-[tex] \frac{5}{4} [/tex]a:3=362+287
[tex] \frac{1792*4+5a}{4} :3=[/tex]649
[tex] \frac{7168+5a}{4}* \frac{1}{3} [/tex]=649
[tex] \frac{5}{12}a=649- \frac{7168}{12} [/tex]
[tex] \frac{5}{12}a= \frac{620}{12} [/tex]
a=[tex] \frac{620}{12}* \frac{12}{5} =124 [/tex]