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r is the counting number from 7 to 9​

How do i do this activity, is appreciated

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0