Jawaban:
cari nilai x
3x + 6x = 180
9x = 180
x = 20
cari nilai y
2y + 6x = 180
2y + 6(20) = 180
2y = 180 - 120
2y = 60
y = 30
x + y = 20 + 30 = 50
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Jawaban:
cari nilai x
3x + 6x = 180
9x = 180
x = 20
cari nilai y
2y + 6x = 180
2y + 6(20) = 180
2y = 180 - 120
2y = 60
y = 30
x + y = 20 + 30 = 50