enVision Algebra Name 4-3 Additional Practice Solving Systems of Equations by Elimination Use elimination to solve each system of equations. 1. (x+7=7 2. x-2y = 10 13x + y = -12 3. (5x + 3y - 12 (x-4y=7 4. f6x +2y--12 4x + 3y - 7 5. 4x-by - 26 5x - 4y = 8 6. (5x + 3y = 13 7x+8y=-16 7. Determine whether the first system of equations is equivalent to the second system of equations. Explain. 13x + 5y = 1 18x +30y - 6 2x-6y = 38 10x - 30y = 190 8. The cost of 2 bottles of water and 4 apples is $5.50. The cost of 3 bottles of water and 5 apples is $7.50. Find the cost of one apple and the cost of one bottle of water.