1 and 2/189
-272
-x + 17 = 19 Subtract -17 from both sides: -x = 2 Multiply both sides by -1: x = -2
-16 = 3x + 1 Subtract 1 from both sides: - 17 = 3x Divide both sides by 3: x = -17/3 or -52/3
Example: 20/17 minus 1 20/17 minus 17/17 3/17
1 and 2/189
4/7 minus 1/6 = 17/42
Anything minus itself equals zero.
-272
-x + 17 = 19 Subtract -17 from both sides: -x = 2 Multiply both sides by -1: x = -2
It equals 1 over 2.
-16 = 3x + 1 Subtract 1 from both sides: - 17 = 3x Divide both sides by 3: x = -17/3 or -52/3
Because 3 is greater than 1. I suppose it's possible to do it in your head, if you remember that in the world of fourths, 1 - 3 equals 2 but it's easier to subtract 3/4 from 17/4 or 3 and 5/4. As long as you can get to 3 and 1/2, it doesn't really matter, but don't tell your teacher I said that.
Example: 20/17 minus 1 20/17 minus 17/17 3/17
x equals subtract 11 divided by 3
2 - 1/8 = 1 + 1 - 1/8 = 1 + (1-1/8) = 1 + 7/8 or 17/8
17 / __ =1 17/17 = 1