Question

разность дробей a+2b2c - a-4b2c равна

Answer 1

$frac{a+2b}{2c} - frac{a-4b}{2c} = frac{a+2b-a+4b}{2c}= frac{6b}{2c}= frac{3b}{c}$

Answer 2

a+2b/2c - a-4b/2c = a+2b-a+4b/2c = 6b/2c = 3b/c