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Verified answer
7x - 12 + 4x - 39 = 18011x - 51 = 180
11x = 180 + 51
x = 231/11
x = 21
3y = 7x - 12
3y = 7(21) - 12
3y = 147 - 12
y = 135/3
y = 45
7x - 12 + 4x - 39 = 180
11x - 51 = 180
11x = 180 + 51
x = 231/11
x = 21
Karena sudut nya sejajar maka, besarnya pun sama
3y = 7x - 12
3y = 7(21) - 12
3y = 147 - 12
y = 135/3
y = 45
Kalau boleh jadikan jawaban terbaik yah.