tolong kerjain no 26,27 sama 28

26)
5x + 11 = 136
5x = 136 - 11
5x = 125
x = 125 : 5
x = 25

y - 2 = 38
y = 38 + 2
y = 40

2z - 8 = 98
2z = 98 + 8
2z = 106
z = 106 : 2
z = 53

x + y + z = 25 + 40 + 53 = 118 (B)

27)
2x - 6 + x + 15 + x - 9 = 180
4x = 180
x = 45

2x - 6 + 3y - 12 = 180
2*45 - 6 + 3y -12 = 180
90 - 6 + 3y - 12 = 180
72 + 3y = 180
3y = 180 - 72
3y = 108
y = 108 : 3
y = 36 (B)

28)
4x + 2 + 126 = 180
4x + 128 = 180
4x = 180 - 128
4x = 52
x = 52 : 4
x = 13

2y + 12 + 126 = 180
2y + 138 = 180
2y = 180 - 138
2y = 42
y = 42 : 2
y = 21

x + y = 13 + 21 = 34 (C)