Question

afa valoarea lui A din exercitiul: (9×4-2×8)-5×a=5

Answer 1

( 9 x 4 - 2 x 8 ) - 5 x a = 5
( 36 - 16 ) - 5 x a = 5
20 - 5 x a = 5
5 x a = 20 - 5
5 x a = 15
a = 15:5
a = 3

Verificare = ( 9 x 4 - 2 x 8 ) - 5 x 3 = 5 → A
( 36 - 16 ) - 15
20 - 15
5