X = 12
67% of x = 67 0.67 x = 67 x=67/0.67 x=100
x = 100
6x+13 = 97-6 6x = 97-6-13 6x = 78 x = 13
67 x 1 = 67
1 x 97, 97 x 1 = 97
1 x 97.
97x67=6499
1 x 97 = 97
(25 +21) * 2 = 92 25 + (21 * 2) = 67
97 * 10 = 970
2x + 21 = 97 2x = 76 x = 38 Check it. 5 x 38 + 21- 3 x 38 190 + 21 - 114 211 - 114 = 97 It checks.