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Afla valoarea : 800 : [ 425 - 13 x ( 48 :4 ) - (89 + a x 4 ) ] = 10

Răspuns :

Magda006
425-13×12-(89+a×4)=80
89+a×4=269-80=189
a×4=189-89
a=100÷4=25
Lenutaboicu
800 : [ 425 - 13 x ( 48 : 4 ) - ( 89 + a x 4 )]= 10
425 - 13 x ( 48 : 4 ) - ( 89 + a x 4 ) = 800 : 10
425 - 13 x 12 - ( 89 + a x 4 ) = 80
425 - 156 - ( 89 + a x 4 ) = 80
269 - ( 89 + a x 4 ) = 80
89 + a x 4 = 269 - 80
89 + a x 4 = 189
a x 4 = 189 - 89
a x 4 = 100
a = 100 : 4
a = 25

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