| Trig cousin | 11 |
| Subj. with x's | 18 |
| Subj. with simplification | 25 |
| Subj. with many unknowns | 24 |
| Subj. with linear equations | 27 |
| Subj. with knowns and unknowns | 30 |
| Subj. with a lot of variables | 29 |
| Subj. that may be Boolean or linear | 35 |
| Subj. in which 2x + 3 = 9 is solved | 35 |
| Subj. for solvers | 17 |
| Subj. dealing with unknowns | 27 |
| Search for the unknown?: Abbr. | 30 |
| Relative of arith. | 18 |
| Precursor of trig. | 18 |
| North African country: Abbr. | 28 |
| Neighbor of Libya: Abbr. | 24 |
| N. Afr. nation | 14 |
| N. Afr. land | 12 |
| Math. system | 12 |
| Math. branch | 12 |
| Math course: abbr. | 18 |
| Land south of the Med | 21 |
| Kind of math | 12 |
| Kin of trig. | 12 |
| Kin of calc. and geom. | 22 |
| Junior H.S. math, perhaps | 25 |
| It's full of x's: Abbr. | 31 |
| It involves many unknowns: Abbr. | 32 |
| High-school math. | 17 |
| High-school math course: Abbr. | 30 |
| High school math: Abbr. | 23 |
| High school math (abbr.) | 24 |
| H.S. math requirement, usually | 30 |
| H.S. class with a lot of unknowns | 33 |
| Geom. prerequisite | 18 |
| Geom. prelim | 12 |
| Form of math. | 13 |
| Forerunner to calc. | 19 |
| Follower of arith. | 18 |
| Elhi subj. | 10 |
| Course with many unknowns: Abbr. | 32 |
| Class with polynomial functions: Abbr. | 38 |
| Class with many functions: Abbr. | 32 |
| Celebrity groom in '68 headlines | 36 |
| Barbary Coast land: Abbr. | 25 |
| Ahaggar Mtns. site | 18 |
| African country on the Med. Sea | 31 |
| 7x - 6 = 2x^2 subj. | 19 |
| 2x + 5 = 15 subj. | 17 |
| ''Solve for x'' subj. | 37 |
| Pond organism | 13 |
| Pond growth | 11 |
| Pond plant | 10 |
| Flowerless plant | 16 |
| Aquatic plant | 13 |
| Aquarium growth | 15 |
| Pond film | 9 |
| Plankton component | 18 |
| Aquatic organism | 16 |
| Pond scum | 9 |
| Pond dweller | 12 |
| Water plant | 11 |
| Pond life | 9 |
| Rootless plant | 14 |
| Microscopic organism | 20 |
| Tiny organism | 13 |
| Bit of plankton | 15 |
| Simple organism | 15 |
| Seaweed, e.g. | 13 |
| Pond cover | 10 |
| Tiny pond plant | 15 |
| Tiny pond organism | 18 |
| Reef denizen | 12 |
| Pool problem | 12 |
| Pond floater | 12 |
| Marine growth | 13 |
| Aquatic organisms | 17 |
| Unwanted aquarium organism | 26 |
| Sea lettuce | 11 |
| Bit of seafloor flora | 21 |
| Water growth | 12 |
| Tiny aquatic plant | 18 |
| Marine ___ | 10 |
| Birdbath organism | 17 |
| Unwanted organism in an aquarium | 32 |
| Stonewort | 9 |
| Sea lettuce, e.g. | 17 |
| Sea growth | 10 |
| Marine plant | 12 |
| Lichen component | 16 |
| Kelp, e.g. | 10 |
| Kelp | 4 |
| Green growth | 12 |
| Fish tank organism | 18 |
| Chlorophyllous organism | 23 |
| Bit of pond vegetation | 22 |
| Bit of ocean life | 17 |
| Bit of aquarium gunk | 20 |
| Aquarium dweller | 16 |
| Stonewort, e.g. | 15 |