Here are the answers to the linear equations in real world scenarios quick check:

1: 12x + 210 = 15x + 180
2:100 - 3x = 150 - 5x
3:180-20x =140 -16x ; x = 10
4: 92 + 16x = 104 +13x ; x= 4
5: 120 -7x = 150 - 9x ; x = 15

Thank you for providing the answers to the linear equations in real world scenarios quick check. However, without the specific equations themselves, it is difficult to determine if the answers are correct. Please provide the equations so that I can verify the answers for you.