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b. [( 58 x a - 80): 25] x 64 = 1 280​

Răspuns :

Jojoi54ask

Răspuns:

[(58xa-80):25]x64=1280

[(58 x a-80):25]=1280:64

[(58xa-80):25]=20

(58xa-80)=20x25

(58xa-80)=500

58xa=500+80

58xa=580

a=580:58

a=10

DarkPenguin46ask

[(58 x a - 80): 25] x 64 = 1280

[(58 x a - 80): 25]=1280:64

[(58 x a - 80): 25]=20

(58 x  a - 80)=25 x 20

(58 x a - 80)=500

(58 x a)=500+80

(58 x a)=580

a=580:58

a=10

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