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Determina valoarea lui a din egalitatea:

(36:a+63:9):2=8

PLZZZ URGENTT COROANA SI 48 DE PUNCTEEE!!!!!!!


Răspuns :

(36:a+63:9):2=8
(36:a+7):2=8
36:a+7=16
36:a=9
a=36:9
a=4

(36:a+63:9):2=8
(36/a+7)•1/2=8
36+7a/a•1/2=8
36+7a/2a=8
36+7a=16a
7a-16a=-36
-9a=-36
a=4