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### Grade 6 - Mathematics12.47 Simplification of Expressions - II

 Example: (7x+9y) + (9x+7y) - (9x+9y) = _____ ? Solution: The expression is, 7x + 9y + 9x + 7y - 9x - 9y Write the like-terms together, 7x + 9x - 9x + 9y + 7y - 9y = 18x - 9x + 7y - 18y = 7x + 7y Directions: Simplify the following expressions. Also write at least 10 examples of your own.
 Q 1: (9x-6y) - (6x-9y) + (7y-6x) = _____ ?14x-7y3x-10y3x+10y-3x+10y Q 2: (8x-9y) - (9x-17y) + (7x+15y) = _____ ?-4x+8y6x+23y-6x-23y6x-23y Q 3: (7x-9y) - (9x+7y) + (7x+9y) = _____ ?3x+7y3x+10y-5x+7y5x-7y Q 4: (8x+9y) - (9x+7y) + (6x+7y) = _____ ?5x-9y-5x+9y5x+9y3x+10y Q 5: (6x-9y) - (7x-9y) + (6x+7y) = _____ ?6x-23y5x+7y-5x-7y-6x-23y Q 6: (7x+6y) + (9x-7y) - (9x+8y) = _____ ?7x+9y7x-9y14x-7y-7x+9y Q 7: (17x+9y) + (6x-9y) - (9x+7y) = _____ ?7x+9y-14x-7y14x-7y14x+7y Q 8: (7x-8y) - (9x-9y) + (6x+7y) = _____ ?4x-8y4x+8y-4x+8y3x+10y Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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