Question

ПОМОГИТЕ РЕШИТЬ УРАВНЕНИЯ С ДРОБЯМИ ДАЮ 20 БАЛЛОВ!
40/63-35/72=
40/143-41/156=
43/126-41/135=
239/240-229/288=

Answer 1

$frac{40}{63} - frac{35}{72} = frac{2880-2205}{4536} = frac{675}{4536} =6,72$

$frac{40}{143} - frac{41}{156} = frac{6240-5863}{22308} = frac{377}{22308}$

$frac{43}{126} - frac{41}{135} = frac{5805-5166}{17010}= frac{639}{17010}$

$frac{239}{240}- frac{229}{288} = frac{68832-54960}{69120} = frac{13872}{69120}$