Question

Determinati numarul natural m pentru care are loc egalitatea :
{13+[25x4-(3x11+3x22)]xm}:2=13

Answer 1

{13+[25x4-(3x11+3x22)]xm}:2=13
{13+[100-(33+66)]xm}:2=13
{13+[100-99]xm}:2=13
{13+m}:2=13
13+m=26
m=26-13
m=13