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(123x a -1278) :149 = 36 raspurs urgent please


Răspuns :

(123×a-1278)=149×36
(123×a-1278)=5364
123×a=5364+1278
123×a=6642
a=6642:123
a=54
(123×a-1278):149=36
123×a-1278=5364
123×a=4086
a=33,2