Question

ajutor eu nu stiu dar poate voi stiti :
[(X-16)×12-80]:8:10=5
2×{2+2×[2+2(6-2×X)]=28
10×[1+3×(3+3:3)]=
10×{1+2×[1+2×(2+4:2)]}=
2×[10+10×(6+2×X)]=300

Answer 1

5×10×8=(x-16)×12-80
400=(x-16)×12-80
400=12a-80
480=12a
a=40
(28:2-2):2=6
2+2(6-2x)=6
4=2a
a=2
6-2x=2x=2