(720+е)*501=365730; 5t+30-2t=42; 36*(x-3)=10-2*(x+2)
1. 720+е=365730÷501 720+е=730 е=10 2. 3t=12 t=4 3. 36х-108=10-2х-4 38х=108+6 38х=114 х=3