Adding and subtracting linear expressions
Add linear expressions by combining like terms
Adding and Subtracting Linear Expressionsand le voyage dans la lune
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Please see my instructional strategy clip for how openers work in my classroom Instructional Strategy - Process for openers. For addition, I will show the students that we can just drop the parenthesis and combine like terms. For subtraction, there is an added step, but it is just as easy! I will ask students to tell me what we did when we subtracted integers — we added the opposite — which is exactly what we will do here. I am going to have the students change the subtraction sign to addition, and then change the sign of each term to its opposite, drop parenthesis and combine like terms. Students will need to pay close attention to precision, so that they are combining terms correctly mathematical practice 6.
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Add and Subtract Linear Expressions
Adding and Subtracting Linear Expressions