Pilihan Soal 26
A.y+1=4
B.2y=8
C.y-1=5
D.2+y=8
Jawaban:
20. A
21. D
22. A
23. C
24. C
25. B
26. B
Penjelasan dan Langkah-Langkah:
20.
[tex] \: 5(m + 2) = 30 \\ 5m + 10 = 30 \\ 5m + 10 - 10 = 30 - 10 \\ 5m = 20 \\ \frac{5m}{5} = \frac{20}{5} \\ m = 4[/tex]
21.
[tex] \frac{56}{(n - 5)} = 7 \\ (n - 5). \frac{56}{n - 5} = (n - 5).7 \\ 56 = (n - 5).7 \\ 56 = 7(n - 5) \\ 56 = 7n - 35 \\ 56 + 35 = 7n - 35 + 35 \\ 91 = 7n \\ \frac{91}{7} = \frac{7n}{7} \\ n = 13[/tex]
22.
[tex] \frac{(m + 9)}{6} = 5 \\ 6 (\frac{m + 9}{6} ) = 6.5 \\ m + 9 = 6.5 \\ m + 9 = 30 \\ m + 9 - 9 = 30 - 9 \\ m = 21[/tex]
23.
[tex]2m = - 18 \\ \frac{2m}{2} = \frac{ - 18}{2} \\ m = - 9[/tex]24.
[tex]2p = p + 10 \\ 2p - p = p + 10 - p \\ p = 10[/tex]
25.
[tex]k - 12 = - k \\ k - 12 + 12 = - k + 12 \\ k = - k + 12 \\ k + k = - k + 12 + k \\ 2k = 12 \frac{2k}{2} = \frac{12}{2} \\ k = 6[/tex]
26.
[tex]3y = 12 \\ \frac{3y}{y} = \frac{12}{3} \\ y = 4[/tex]
