Tolong bantu jawab nomor 11-12

2(x-4) + 2(x+5) = 98
6x-8 + 2x + 10 = 98
6x + 2x - 8 + 10 = 98
8x + 2 = 98
8x = 98-2
8x = 96
x = 96/8
x = 12

p = 3x - 4
= 3.12-4 = 32
l = x + 5
= 12 + 5 = 17

jdi,luas taman = p x l = 32 x 17 = 544m²

11) 3(x + 2) < 4(2x - 7)
3x + 6 < 8x - 28
3x - 8x < -28 - 6
-5x < -34
5x > 34
x > 6,8
x = {7, 8, 9, 10,.....}

12) keliling = 2(p + l)
98 = 2(3x - 4 + x + 5)
98 = 2(4x + 1)
98 = 8x + 2
96 = 8x
x = 96/8 = 12
Panjang = 3x - 4 = 3(12) - 4 = 32
Lebar = x + 5 = 12 + 5 = 17
Luas = p x l = 32 x 17 = 544 m^2