tolong dijawab no. 22,24,27! please pake cara!

22)
Misal lebar = x cm
panjang = (x + 4) cm

Keliling < 48
2 (p + l) < 48
2 (x + 4 + x) < 48
2 (2x + 4) < 48
4x + 8 < 48
4x < 48 - 8
4x < 40
[tex]x < \frac{40}{4} [/tex]
x < 10 cm

Jawaban : C. x < 10

24)
[tex]4x + 5 \leqslant 6x - 3 \\ 4x - 6x \leqslant - 3 - 5 \\ - 2x \leqslant - 8 \\ x \geqslant 4[/tex]
Jawaban : B


27)
[tex] \frac{1}{5} x - 7 < 1 \\ x - 35 < 5 \\ x < 5 + 35 \\ x < 40[/tex]

Jawaban : D