Q 1: (15x7y+9z) + (9x7y+10z)  (7x9z+9y) = _____ ? 17x23y28z 23x22y+24z 17x23y+28z 9x9y+19z

Q 2: (15x9y+6z) + (15x7y+9z)  (7x9z+6y) = _____ ? 23x+22y+24z 23x7y+24z 17x23y+28z 23x22y+28z

Q 3: (21x7y) + (7x9y)  (7x9y7z) = _____ ? 8x9y17z 21x7y+23z 9x7y+23z 21x7y+7z

Q 4: (15x7y+6z) + (15x6z+6y)  (6x7y+7z) = _____ ? 15x24y+23z 23x22y+24z 23x22y24z 24x+6y7z

Q 5: (7a9b+7c) + (6a6b+15c)  (7a17b) = _____ ? 6a2b+23c 6a+2b23c 8a6b 6a2b+15c

Q 6: (7x7y9z) + (7x9y+7z)  (9x7y+15z) = _____ ? 9x+7y23y 8x9y17z 9x7y+23z 21x7y+7z

Q 7: (7x9y+7z) + (15x9y+7z)  (7x+6y9z) = _____ ? 24x+6y7z 23x22y+24z 15x24y+23z 16x+24y+23z

Q 8: (9x7y+7z) + (9x7y+9z)  (9x7y7z) = _____ ? 9x7y+23y 6x2y+23z 8x9y17z 8x7y+23y

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!

