5.1 · Simultaneous equationsLesson 1 of 9Free preview
Simultaneous equations: elimination and substitution
Two facts about two unknowns fix both. Add or subtract to remove one letter, or replace it with what the other equation says.
5.1 · Simultaneous equationsLesson 1 of 9Free preview
Two facts about two unknowns fix both. Add or subtract to remove one letter, or replace it with what the other equation says.