1) X + 3,75 = 1Subtract 3,75 from both sidesX = 13,25
2) 12,1 - x = 8,0Subtract 12,1 from both sides-x = -4,0Multiply by -1 to solve for xx = 4,05
3) X - 3,2 = 18,0Add 3,2 to both sidesX = 21,28
1) X + 3,75 = 1
Subtract 3,75 from both sides
X = 13,25
2) 12,1 - x = 8,0
Subtract 12,1 from both sides
-x = -4,0
Multiply by -1 to solve for x
x = 4,05
3) X - 3,2 = 18,0
Add 3,2 to both sides
X = 21,28