3 5 9 x )= 7 x 7 ) 1 July 8, 2019 16 32 64 128 3 5 9 x )= 7 x 7 )+ 1 3 5 x 5 7 x 7 9 x 9 11 X 7 y 3 5 x 7 y 9 1 by elimination method X 7 y 3 5 x 7 y 9 1 by substitution method X 19 3 x 13 5 x 7 7 x 1 9 1 3 x 3 5 x 5 7 x 7 9 x 9 11 5 x 7 = 35 3 x-5=x+3 3 x 3 = 9
