x=3 (39)(x) = (39)(3) = 117
1 x 39, 3 x 13 = 39
39/1
3 times 3 x 13 = 39
39
13 X 3 = 39
Original Equation: 4x + 9x = 39 Factor: x(4+9) = 39 Add: x(13) = 39 Divide: x = 3 Check: 4(3) + 9(3) = 12 + 27 = 39 = 39
3 x 13
13 x 3
3 x 13
3 x 13
13 x 3
3 x 13