resta monomios
| __ | 1. | -ab² - ab² | | A. | 4xy | | __ | 2. | 2a²b - 4a²b - a²b | | B. | -ab² | | __ | 3. | 2xy - 4xy + 6xy | | C. | 5x | | __ | 4. | 3xy - 2xy - 4xy | | D. | -x² | | __ | 5. | 3x² - 4x² | | E. | -2ab² | | __ | 6. | 3x² - 4x² - 3x³ + 7x² | | F. | -3xy | | __ | 7. | 5ab² + 3ab² - 6ab² | | G. | 2ab² | | __ | 8. | 6ab² - 3 ab² - 4ab² | | H. | 3x² | | __ | 9. | 12x + 3x - 4x - 5x - x | | I. | -3a²b | | __ | 10. | 12x - 3x - 3x - 4x - 5x | | J. | -3x |
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