Question

Calculeaza:
(242+360;10-214);(80;5-4x2);a=240

Answer 1

( 242 + 360 : 10 - 214 ) : ( 80 : 5 - 4 × 2 ) : a = 240

( 242 + 36 - 214 ) : 128 × 1/a = 240

64 : 128 × 1/a = 240

64/128 × 1/a = 240

1/2 × 1/a = 240

1/2a = 240

1 = 480a

a = 1/480


Verificare:

( 242 + 360 : 10 - 214 ) : ( 80 : 5 - 4 × 2 ) : 1/480 =

= ( 242 + 36 - 214 ) : 128 × 480 =

= 64 : 128 × 480 =

= 64/128 × 480 =

= 1/2 × 480 = 240 ( A )