7 3 5 x 10 3 4 July 8, 2019 16 32 64 128 3 4x 3 )-( x 7 )= 5 10 x )+ 2 3 5 x 7 10 )=- 3 1 4 4x 3 3 5 7 15 x 10 49 xz 3 7 3 x 10 xz 5 5 x 7 = 35 7 x 10 3 x-5=x+3
