!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!)))))))?

Răspuns:
Explicație pas cu pas:
4(5-x) -3(1+x) = 2 <=> 20-4x -3-3x = 2 <=> 4x+3x = 20-3-2
=> 7x = 15 => x = 15/7
²⁾(3+x)/2 - ¹⁾(5-x)/4 = ⁴⁾x <=> 6+2x-5+x = 4x <=> 4x-3x = 6-5
=> x = 1