(x+47972):75*600=512400
x+47972/75*600=512400
(x+47972)*8=512400
8x=512400-383776
8x=128624
x=16078
x=1,6078*10⁴
(x-30985):15=12000-9731
(x-30985)/15=2269
x-30985=34035
x=34035+30985
x=65020
x=6,502*10⁴
