3m - 2n = -1
-3.7a + 4a - 3.7a = -2.7a
4x - 8y - 6x + 11y = -2x + 3y
-7x - 8x + 2x = -13x
-1.5a + 7.3b = 5.8b
1.8b - 5.8b + 3b = -1.2b
-2m + 3n - 8m - n = -10m + 2n
3m - 2n = -1
-3.7a + 4a - 3.7a = -2.7a
4x - 8y - 6x + 11y = -2x + 3y
-7x - 8x + 2x = -13x
-1.5a + 7.3b = 5.8b
1.8b - 5.8b + 3b = -1.2b
-2m + 3n - 8m - n = -10m + 2n