Need help with number 12. Thanks
1 answer:
7x - 7 = 3x + 45
4x = 52
x = 13
7x - 7 = 7(13) - 7 = 84
y - 6 = 180 - (84 + 63)
y - 6 = 180 - 147
y - 6 = 33
y = 39
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