Question

Aflaţi valorile nr.necunoscute din: a x 7-1=62 ;n+5×4=25 ;7×8-b=51

Answer 1

a/7-1=62;a/7=62+1;a=63*7;a=9;9/7-1=62            n+5/4=25;n+25=5/4;n=25-20;n=5;5+5/4=25           7/8-b=51;b-51=7/8;b=56-51;b=5;7/8-5=51