18 - Calculate 2(x+y) for x=4, y=5, x = -13 or x = -13/8 - Solve x+3/8 = -2 find x, x = 54 - Solve 5-x/9 = -1 find x, x = 16 - Solve x/2 + 11 = 19 find x, x = 5/2, y = 5/2 - Solve x+3y=10 and x+5y=15 find x and y , x = 35/13 and y = -5/13 - Solve 2x-y=5 and 3x+5y=10 find x and y , -ab - Add 3ab, -4ab, 9ab, -10ab, a-4b - Subtract 2a-b from 3a-5b, x = -1 - Solve (2x + 5)/(x + 4) = 1, x = 3 - Solve: 6x - 19 = 3x - 10, x = 5/4 - Solve: 5 - 2(x - 1) = 4(3 - x) - 2x., x = 42 - Solve x/2 + x/3 = x - 7, x = 1/5 - Solve 2/(x + 3) = 3/(5 - x), x = 10 - Solve 5x - 11 = 3x + 9, x = -10 - Solve 2(x - 1) - 6x = 10 - 2(x - 4),

BRAIN MATH - 8th Algebra

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