ANSWER KEY A. B. C. 6m 2 = + 13 4y + 9 = 4y 7 3c + 2 = 3c + 2 m – – = 3 16 = 0 m c = c one solution no solution infinite solutions D. E. F. 3(x 4) = 2x + 6 -8j + 14 = -2(4j 7) 18x 5 = 3(6x 2) – – – – = 18 1 = 0 x j = j one solution infinite solutions no solution G. H. I. -8a + 10 = 2(5 4a) 9x + 3x 10 = 3(3x + 4x 10 = + 3x 2x x) x – – – – -10 = 0 = 5 x a = a infinite solutions no solution one solution J. K. L. 6 = 8 (9 + 3(n 1) = 5n + 3 2n a a) – – – – x = x = 2.5 0 = 6 a infinite solutions no solution one solution M. N. O. 8(h 1) = 6h + 4 + 2h 3(2y + 3) = 6y + 9 – = 0 w 0 = 12 y = y one solution no solution infinite solutions
ANSWER KEY A. 6m – 2 = m + 13 m = 3 one solution B. 4y + 9 = 4y – 7 16 = 0 no solution C. 3c + 2 = 3c + 2 c = c infinite solutions D. 3(x – 4) = 2x + 6 x = 18 one solution E. -8j + 14 = -2(4j – 7) j = j infinite solutions F. 18x – 5 = 3(6x – 2) 1 = 0 no solution G. -8a + 10 = 2(5 – 4a) a = a infinite solutions H. 9x + 3x – 10 = 3(3x + x) -10 = 0 no solution I. 4x – 10 = x + 3x – 2x x = 5 one solution J. x = x infinite solutions K. a – 6 = 8 – (9 + a) a = 2.5 one solution L. 3(n – 1) = 5n + 3 – 2n 0 = 6 no solution M. 8(h – 1) = 6h + 4 + 2h 0 = 12 no solution N. 3(2y + 3) = 6y + 9 y = y infinite solutions O. w = 0 one solution