Question

помогите решить уравнения
(720+e)*501=365730
5t+30-2t=42
36*(x-3)=10-2*(x-2)

Answer 1

1) (720+е)*501=365730
360720+501е=365730
501е=5010
е=10

2) 5t+30-2t=42
3t+30=42
3t=12
t=4

3) 36(x-3)=10-2(x-2)
36x-108=10-2x+4
36x-108-10+2x-4=0
38x-122=0
38x=122
x=61/19