tentukan hp nya,tolong ya plis!!!!

Sub a
m - 9 = 13
m = 13 + 9
m = 22
HP = {22}

Sub b
-11 + x = 3
x = 3 + 11
x = 14
HP = {14}

Sub c
2a + 1 = a - 3
2a - a = -3 - 1
a = -4
HP = {-4}

Sub d
2x -13 < 25
2x - 13 + 13 < 25 + 13
2x < 38
x < 19
HP = {x| x<19}

Sub e
a - 8 < 1 - 2a
a -8 + 2a < 1
3a - 8 < 1
3a - 8 + 8 < 1 + 8
3a < 9
a < 3
HP = {a| a<3}

Sub f
5 + 5y ≥ 40
5 - 5 + 5y ≥ -5 + 40
5y ≥ 35
y ≥ 7
HP = {y| y ≥ 7}