13 - 4 + 12 = 21
6
Three minus three times six plus two is equal to -13.
13 - 12 + 5 = 6
95
-12
6
6
13 + -12 - 5 = -4 13 + -12 = 1 - 5 = -4
3x - 12 = 10x - 15 - 6x -10 3x - 12 = 4x -25 3x + 13 = 4x 13 = 4x - 3x 13 = x None?
87
13 + 12 - 6 - 2 (16 plus 12 minus 6 minus 2) (13 + 12 = 25. 25 - 6 = 19. 19 - 2 = 17!