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### Grade 6 - Mathematics12.42 Subtraction of Binomials - I

 Example: (7x-2y) - (5x-3y) = _____ ? Solution: Subtracting 5x-3y from 7x-2y is same as adding the additive inverse of 5x-3y to 7x-2y. The additive inverse of (5x-3y) is (-5x+3y), therefore, add (-5x+3y) to 7x-2y, 7x - 2y - 5x + 3y = 2x + y. Directions: Solve the following questions. Also write at least 10 examples of your own.
 Q 1: (9x-2y) - (3y+7x) = _____ ?12x-6y2x-5y2x+5y12x+5y Q 2: (56x-71y) - (60x+7y) = _____ ?4x-78y63x-64y-4x-78y63x+64y Q 3: (22a+71x) - (-72a+72x) = _____ ?50a-y-94a+x94a-x50a+143y Q 4: (72x-91y) - (71x-80y) = _____ ?x-11yx+9yx-9y-x+11y Q 5: (17x-2y) - (6x-7y) = _____ ?11x+9y24x+8y24x-8y11x-9y Q 6: (7x-7y) - (7x+7y) = _____ ?-14y-14x14x+14y14x-14y Q 7: (78x-30y) - (7x+2y) = _____ ?71x+32y80x-37y80x+37y71x-32y Q 8: (21x+82y) - (-72x+80y) = _____ ?51x+2y51x+162y93x-2y93x+2y Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!