Okay. The question is m/9 - 17 = 21. First off, we will add 17 to both sides. -17 + 17 cancels out. 21 + 17 is 38. That leaves m/9 = 38. Multiply each side by 9 to isolate the m, because m is the numerator and 9 is the denominator. m/9 * 9/1 cancels out. 38 * 9 is 342. Let's check this. 342/9 is 38. 38 - 17 is 21. 21 = 21. There. x = 342.
m/9 - 17=21 ------------ Simplify 1/9m - 17 = 21 ---------------- Add 17 to each side 1/9m-17+17=21+17 1/9m = 38 ------------------------ Multiply each side by 9 9 * (1/9m) = 38 * 9 m = 342 is your answer
