VAAA IMPLOOOOOR. VAAAAA ROOOOOOG AMMMM NEEEEVOOOOIEEEEE URGEEEEENT. VAAAAA ROOOOG. DAAAAAU COOOROOAAAAANAAAA PROOOOMIIIIT. AMMMMM NEEEVOOOOOIEEEEEE FFFFOOAAAAAAARTEEEEEE REEEEEPEEEEDEEE. VAAA IMPLOOOOR. DAAAU COROOAAANAAA

Explicație pas cu pas:
b)x-5/4=7/2
2(x-5)=4×7
2x-10=28
2x=28+10
2x=38
x=38÷2
x=19