Answer :
1) There are no solutions for this equation in the solution set.
2) The solution set is {5} because 15/5 = 3
3) The solution set is {8} because [tex]31 = 3 (8) + 7 \\ 31 = 24 + 7 \\ 31 = 31[/tex]
4) The solution set is {20} because 20 - 13 = 7
5) The solution set is {66} because 22 x 3 = 66
6) [tex]A = 32 - 9(2) \\ A = 32 - 18\\ A = 14[/tex]
7) [tex]12 \times \frac{5}{15} - 3 = Y \\\\ 12 \times \frac{1}{3} -3 = Y \\\\ 4 -3 = Y \\ Y =1[/tex]
8) [tex]27 + \frac{5}{16} = G\\\\G = \frac{432 + 5}{16}\\\\G = \frac{437}{16}\\\\G = 27 \frac{5}{16}[/tex]
9) [tex]R = \frac{9(6)}{ ( 8 + 1 ) 3}\\\\R = \frac{54}{9(3)} \\\\R = \frac{54}{27}\\\\ R = 2[/tex]
10) [tex]15,579 + 6,220 + 18,995 = G\\\\ G = 40,794[/tex]
11) The solution set is {6, 7} because:
6 -2 < 6, which is 4 < 6
AND
7 - 2 < 6, which is 5 < 6
12) The solution set is {9, 11} because:
3 ≥ 25/9, which is 3 ≥ 2.77777777778
AND
3 ≥ 25/11, which is 3 ≥ 2.2727272727
Hope this helps :D
2) The solution set is {5} because 15/5 = 3
3) The solution set is {8} because [tex]31 = 3 (8) + 7 \\ 31 = 24 + 7 \\ 31 = 31[/tex]
4) The solution set is {20} because 20 - 13 = 7
5) The solution set is {66} because 22 x 3 = 66
6) [tex]A = 32 - 9(2) \\ A = 32 - 18\\ A = 14[/tex]
7) [tex]12 \times \frac{5}{15} - 3 = Y \\\\ 12 \times \frac{1}{3} -3 = Y \\\\ 4 -3 = Y \\ Y =1[/tex]
8) [tex]27 + \frac{5}{16} = G\\\\G = \frac{432 + 5}{16}\\\\G = \frac{437}{16}\\\\G = 27 \frac{5}{16}[/tex]
9) [tex]R = \frac{9(6)}{ ( 8 + 1 ) 3}\\\\R = \frac{54}{9(3)} \\\\R = \frac{54}{27}\\\\ R = 2[/tex]
10) [tex]15,579 + 6,220 + 18,995 = G\\\\ G = 40,794[/tex]
11) The solution set is {6, 7} because:
6 -2 < 6, which is 4 < 6
AND
7 - 2 < 6, which is 5 < 6
12) The solution set is {9, 11} because:
3 ≥ 25/9, which is 3 ≥ 2.77777777778
AND
3 ≥ 25/11, which is 3 ≥ 2.2727272727
Hope this helps :D