Ответ:
1)-20+(х+15)=0
-20+х+15=0
х=20-15
х=5
3)-20+(15+х)=0
-20+15+х=0
5)5х+(-100)=0
5х-100=0
5х=100
х=100:5
х=20
7)0.6х+(-72.6)=0
0.6х-72.6=0
х=72.6:0.6
х=121
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
1)-20+(х+15)=0
-20+х+15=0
х=20-15
х=5
3)-20+(15+х)=0
-20+15+х=0
х=20-15
х=5
5)5х+(-100)=0
5х-100=0
5х=100
х=100:5
х=20
7)0.6х+(-72.6)=0
0.6х-72.6=0
х=72.6:0.6
х=121