1) (720+е)*501=365730
360720+501*e=365730
720+e=730 (сократили на 501)
e=10
2) 15t+30-12t=42
3t=42-30
3t=12
t=4
3) 36*(x+3)=172+2*(x+2)
36x+108=172+2x+4
36x-2x=172+4-108
34x=68
x=2
(720+е)*501=365730
360720+501е=365730
501е=365730-360720
501е=5010
е=5010:501
е=10
15t+30-12t=42
t=12:3
36*(x+3)=172+2*(x+2)
36x-2x=172-108+4
x=68:34
х=2
1) (720+е)*501=365730
360720+501*e=365730
720+e=730 (сократили на 501)
e=10
2) 15t+30-12t=42
3t=42-30
3t=12
t=4
3) 36*(x+3)=172+2*(x+2)
36x+108=172+2x+4
36x-2x=172+4-108
34x=68
x=2
(720+е)*501=365730
360720+501е=365730
501е=365730-360720
501е=5010
е=5010:501
е=10
15t+30-12t=42
3t=42-30
3t=12
t=12:3
t=4
36*(x+3)=172+2*(x+2)
36x+108=172+2x+4
36x-2x=172-108+4
34x=68
x=68:34
х=2