Решить уравнения в столбик. ( 720 + е ) × 501 = 365.730 5t + 30 - 2t = 42 36 × ( x - 3 ) = 10 - 2 × ( x + 2 )

(720+е)х 501= 365 730,720+е=365 730:501,720+е=730,е=730-720,е=10проверка (720+10)*501=365730, 365730=3657305t+30-2t=42,3t+30=42,3t=42-30,3t=12, t=12:3,t=4,проверка 5х4+30-2х4=42, 42=4236*(х-3)=10-2*(х+2),36х-108=10-2х-4,36х-108=6-2х,36х+2х=6+108,38х=114,х=114:38,х=3, проверка 36*(3-3)=10-2*(3+2), 0=0