11x + 5x - 15 - 13 + 15 + 13 = 180 + 15 + 13
16x = 208
16x/16 = 208/16
x = 13
11x + 5x - 15 - 13 + 15 + 13 = 180 + 15 + 13
16x = 208
16x/16 = 208/16
x = 13
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