The sixth grade students started subtraction equation yesterday in Math class. There are a few simple rules they need to follow to be successful.
Turn all subtraction equations into addition equations:
1. Leave 1st number alone (usually the variable).
2. Change addition to subtraction.
3. Change the sign of the 2nd number (positive to negative, negative to positive)
Then follow addition equation rules:
1. Add the opposite to both sides.
2. Solve equation remember your integer rules (same sign=add and keep sign OR different sign=what you have more of? and Subtract to find out how much more.)
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