a.
y = 180 - 130
y = 50
5x = 3x + 8 + y
5x - 3x = 8 + 50
2x = 58
x = 58/2
x = 29
x = 29 dan y = 50
b
CFE = 180 - 5x
CFE = 180 - 5(29)
CFE = 180 - 145
CFE = 35
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a.
y = 180 - 130
y = 50
5x = 3x + 8 + y
5x - 3x = 8 + 50
2x = 58
x = 58/2
x = 29
x = 29 dan y = 50
b
CFE = 180 - 5x
CFE = 180 - 5(29)
CFE = 180 - 145
CFE = 35