9x 4 5x 7 July 8, 2019 16 32 64 128 9x 4 5x 8 7x 9 3x 5 4 (- 7 5x )= 9x 9 9x 4 5x 12 7 8 5x 4 9x 7 4x 3 180 (- 7x3 9x 5x 4 9x x 7 5x 4 8 3x 9x 0 7 4 5x 1 5 7 5x 7y =- 4 9x 11y 40 Carilah solusi dari 9x 4 5x 7
