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education/math/Systems of Equations.md
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@ -25,4 +25,4 @@ $$ 4x -3y = -13 $$
You "add" the two equations together, getting: You "add" the two equations together, getting:
$$ 6x + 0y = 10 $$ $$ 6x + 0y = 10 $$
You now know that $6x = 10$. You now know that $6x = 10$.
If you don't have two values that evenly cancel out, like $3$ and $4$, you can find the least common multiple and multiply the entire equation so that those two are equal. In this case, you'd multiply one equation by 4, and one equation by 3. If you don't have two values that evenly cancel out, like $3$ and $-4$, you can find the least common multiple and multiply the entire equation so that those two are equal. In this case, you'd multiply one equation by 4, and one equation by 3. If the signs don't cancel out, you can multiply one of the equations by -1.