5x x 4 12 July 8, 2019 16 32 64 128 5x 9 x 4 )= 12 5x 4 x 2 )= 12 1 5x 4 x 12 3 x 4 5x 12 4x 3 x 4 )= 5x 12 4 x 6 )+ 5x 123 5x 4y 4 x 12y 20 5x 4y 4 x 12y 20 by elimination method 5x 4 x 12 12x Y 5x 4 x 12 y 2x 7 x 5x 4 1250 123 5x x 4 )= 38 5 x 4 )= 5x 12 X 4 2 )= 5x 12x 13 125 5x 4 x )= 15