To solve the equations:
1) X - 42 = 3Add 42 to both sidesX = 80
2) 16 + X = 5Subtract 16 from both sidesX = 35
3) 900 - X = 20Subtract 900 from both sides-X = -70Divide by -1 to solve for XX = 700
So, the solutions areX = 80, 35, 700
To solve the equations:
1) X - 42 = 3
Add 42 to both sides
X = 80
2) 16 + X = 5
Subtract 16 from both sides
X = 35
3) 900 - X = 20
Subtract 900 from both sides
-X = -70
Divide by -1 to solve for X
X = 700
So, the solutions are
X = 80, 35, 700