1. Remove constant
Undo the visible number.
x + b = c (warm-up)
2 visual steps / linear isolate x
2. Check
Substitute the answer back.
Practice Level 1
Keep the columns in place and solve one window at a time.
Start Level2 visual steps / linear isolate x
Undo the visible number.
Substitute the answer back.
Keep the columns in place and solve one window at a time.
Start Level