4х=10
х=10:4
х=2,5
,,,,,,,,,,,,,,,,,,,,,,
1)-522432/576
5184 /907
_____
-4032
4032
____
0
_____________________________
2) *32
907
_____
+224
000
288
_______
29 024
_________________________
3) *176
176
__________
+ 1056
1232
176
_________
30976
____________________
4) + 30976
29024
______
60000
___________
5) *60000
400
______
+ 00000
00000
240000
_________
24000000
1. 116-20,5+16-0,5=132-21= ?
2. 4
3. -5,6+1,6-х
-4-х
13.2-(5.7+y)=3.9
13.2-5.7-y=3.9
7.5-y=3.9
-y=3.9-7.5
-y=-3.6
y=3.6
проверка: 13.2-(5.7+3.6)=3.9
13.2-9.3=3.9
3.9=3.9