12 < 5x - 3 < 22 Add 3 to all three sides: 12 < 5x - 3 < 22 +3 +3 +3 ---------------- 15 < 5x < 25 Divide all three sides by the coefficient of x, which is 5< < 3 < x < 5 The graph of this is ---------------------o=======o-------- -2 -1 0 1 2 3 4 5 6 7 and the interval notation is (3, 5) Edwin