Simultaneous Equations by Elimination Method: The "DAD" Rule Explained! ⚡
Автор: Learn Math with Daniel
Загружено: 2026-02-27
Просмотров: 5
Описание:
If you’ve already mastered the SMS trick, it’s time to learn the second half of the puzzle. In this video, we dive into how to handle equations where the signs don’t match.
Stop guessing whether to plus or minus—just remember DAD!
👤 What is DAD?
When you've scaled your equations and you're ready to eliminate a variable, look at the signs:
Different sign
Add
Different sign
If the coefficients of the variable you want to eliminate have Different Signs (one is plus, one is minus), you Add the two equations together.
💡 Pro-Tip: Think of it like a balance.
If you have +4 and -4, adding them together brings you right to zero. That is the goal of elimination!
If this "DAD" hack saved your math homework, hit the Like button and check out the "SMS" video for the other half of the rule!
#MathsHelp #AlgebraHack #SimultaneousEquations #EliminationMethod #DADRule #mathstipsandtricks
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