Question

упрастите выражение 4x/3x+3 - x-1/x+1

Answer 1

$frac{4x}{3x+3} - frac{x-1}{x+1} = frac{4x}{3(x+1)} - frac{x-1}{x+1} = frac{4x}{3(x+1)} - frac{3(x-1)}{3(x+1)} = frac{4x-3(x-1)}{3(x+1)} = frac{4x-3x+3}{3x+3} = frac{x+3}{3x+3}$

Answer 2

На здоровье)