2х*62,5-32,5=42,5 и 5*(4,2+3,2х)=53

2x*62,5-32,5=42,5125x-32,5=42,5125x=42,5+32,5125x=75:125x=75/125=3/55*(4,2+3,2x)=5321+16x=5316x=53-2116x=32:16x=2