(-5x - y -3) (3x-3y+2) +(4x+5y+7)
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Step-by-step explanation:
Solve each system by substitution. See Example 1. 7. 4x + 3y = -13 8. 3x + 4y = 4 -x+ y = 5 x - y = 13 10. 6x - y = 5 11. 8x – 10y = -22 y = 11x 3x + y = 6 13. 7x - y = -10 14. 4x + 5y = 7 3y - x = 10 9y = 31 + 2x 16. 3x - 7y = 15 17. 3y = 5x + 6 3x + 7y = 15 x + y = 2 9. x - 5y = 8 x = 6y 12. 4x - 5y = -11 2x + y = 5 15. -2x = 6y + 18 -29 = Sy – 3x 18. 4y = 2x - 4 Solve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 19. 3x - y = -4 20. 4x + y = -23 21. 2x – 3y = -7 *+ 3y = 12 *-2 = -17 5.1 + 4y = 17 22. 41 = -1 23. Sa+7=6 _ 24. 12. - 3y = 0
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