3 4х 7 )- 5 3х 4 )= 17 July 8, 2019 16 32 64 128 3 7х-5-4х 5 x 7 = 35 5 3/7-4х=3/7-1/4х 3 7×(17 4-4x)=18 5 3х/4х-4 + 5х/7-7х
