H the equation has x = 4 and x = -4 as it’s only solutions is true
The LCD of 11/20 and 31/45 is 180
20 40 60 80 100 120 140 160 180
45 90 135 180
9/21 as the original
1/7 is the simplified version
No, if you are subtracting a bigger than the one it is being taken from then the answer will be negative. Ex:5-10=-5
Hope this helps:)
