Equations & Systems
Solve linear equations and 2-variable / 3-variable systems mentally using Cramer's rule.
Linear: isolate x. 2-variable: read D from x,y, D_x from -det(y,b), and D_y from det(x,b). 3-variable uses the in-place signs +, -, +.
Visual Methods
Level Visual Guides
30 levels. Each level opens as 6 visual blocks.
Level 1 - foundation
x + b = c (warm-up)
6 image blocks
Level 2 - foundation
ax + b = c (small)
6 image blocks
Level 3 - realistic untimed
ax + b = c (signed)
6 image blocks
Level 4 - foundation
ax + b = c (mastery)
6 image blocks
Level 5 - foundation
ax + b = cx + d (small)
6 image blocks
Level 6 - foundation
ax + b = cx + d (medium)
6 image blocks
Level 7 - foundation
ax + b = cx + d (signed)
6 image blocks
Level 8 - realistic untimed
ax + b = cx + d (mastery)
6 image blocks
Level 9 - foundation
2-var Cramer - find x (small)
6 image blocks
Level 10 - foundation
2-var Cramer - find y (small)
6 image blocks
Level 11 - build-up
2-var Cramer - find x (medium)
6 image blocks
Level 12 - build-up
2-var Cramer - find y (medium)
6 image blocks
Level 13 - realistic untimed
2-var Cramer - find x (signed)
6 image blocks
Level 14 - build-up
2-var Cramer - find y (signed)
6 image blocks
Level 15 - build-up
2-var Cramer - find x (mastery)
6 image blocks
Level 16 - build-up
2-var Cramer - find y (mastery)
6 image blocks
Level 17 - build-up
3-var Cramer - find x (small)
6 image blocks
Level 18 - realistic untimed
3-var Cramer - find y (small)
6 image blocks
Level 19 - build-up
3-var Cramer - find z (small)
6 image blocks
Level 20 - build-up
3-var Cramer - find x (medium)
6 image blocks
Level 21 - mastery
3-var Cramer - find y (medium)
6 image blocks
Level 22 - mastery
3-var Cramer - find z (medium)
6 image blocks
Level 23 - realistic untimed
3-var Cramer - find x (mastery)
6 image blocks
Level 24 - mastery
3-var Cramer - find y (mastery)
6 image blocks
Level 25 - mastery
3-var Cramer - find z (mastery)
6 image blocks
Level 26 - realistic untimed
2-var realistic - find x (no timer)
6 image blocks
Level 27 - realistic untimed
2-var realistic - find y (no timer)
6 image blocks
Level 28 - realistic untimed
3-var realistic - find x (no timer)
6 image blocks
Level 29 - realistic untimed
3-var realistic - find y (no timer)
6 image blocks
Level 30 - realistic untimed
3-var realistic - find z (no timer)
6 image blocks
Practice this category
Use the same method on live equations & systems levels.
Start Equations & Systems Workout