3 4x 7 ≥ 15 July 8, 2019 16 32 64 128 3 4x 7 15 3 4x 7 15 14x 3 4x 7 )- 4 12x 15 3 4x 7 )- 4 12x 15 simplified 7 4x 3 )- 15 482 4x 3 3 5 7 15 x 10 4x 7 15x 3 2x 5 3 and 4x 7 15 3 15 4x )+ 5 3x 7 )= 15 2x 3 7 4x 1 15 3 4x 20 7 6x 30 15 2x 2 50 4x 7 x 3 15 Dfrac 15 4x 3 7 Solve the inequality 3 4x 7 ≥ 15