Tolong dijawab y makasih pake cara,bsk dikumpulin

1. a. 2x - 3 = 11
2x = 11 + 3
2x = 14
x = 14/2
x = 7
b. 4x-2 = 3x + 4
4x - 3x = 4 + 2
x = 6
c. 1/2x + 3 = 5
1/2x = 5 -3
1/2x = 2
x = 4

2. a. 5y + 4 ≤ 19
5y ≤ 19 - 4
5y ≤ 15
y ≤ 15/5
y ≤ 3

b. 3 - 2y < 7
-2y < 7 -3
-2y < 4
y < 4/-2
y < -2

3. p = (x+8) l = (x-6) keliling = 48 cm
p=? l=?

k = 2(p + l)
48 = 2(x+8 + x-6)
48 = 2( 2x +2)
48 = 4x + 4
48 - 4 = 4x
44 = 4x
x = 11

p = (x+8)
p = (11+8)
p = 19

l= (x-6)
l = (11-6)
l = 5