4 3 x 5 2 x 7 15 July 8, 2019 16 32 64 128 4 3 x 5 2 x 7 15 as a fraction 3 4 x 5 )+ 15 50 2x 2 =- 7 6 x 5 15 x 2 mũ 3 4 x 3 5 x 7 15 nhân 2 mũ 3 4 x 3 mũ 2 5 x 7 5 x 7 = 35 4(2-x) 7-5x 15-4x 3 4 + 4 =5
