Ответ:
1) 4 и 5
2) 2 и -3
Объяснение:
1) x+y=9
x-y=1
x=9-y
9-y-y=1
-2y=-9+1
2y=8
y=4⇒x=9-4=5
2) x+20y=37
5y+x=7
x=7-5y
7-5y+20y=37
15y=30
y=2⇒x=7-5*2=-3
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
1) 4 и 5
2) 2 и -3
Объяснение:
1) x+y=9
x-y=1
x=9-y
9-y-y=1
-2y=-9+1
2y=8
y=4⇒x=9-4=5
2) x+20y=37
5y+x=7
x=7-5y
7-5y+20y=37
15y=30
y=2⇒x=7-5*2=-3