Răspuns:
Luam invers toata schema:
x-173.154=21 => x=21+173.154 => x=173.175
28.735+x=173.174 => x=173.174-28.735 => x=144.440
x-36.795=144.440 => x=144.440+36.795 => x=181.235
x-143.014=181.235 => x=181.235+143.014 => x=324.249
꧁ Sper ca te-am ajutat! ꧂
