Question

60 поделить икс -- 10   икс * 9 -- 99  икс + 86--98

Answer 1

60 : х = 10
х = 60 : 10
х = 6
60 : 6 = 10
-----------------
9х = 99
х = 99: 9
х = 11
11*9 = 99
-----------------
x + 86= 98
x = 98 - 86
x = 12
12 + 86 = 98

Answer 2

60:x=10
x=60:10
x=6
____________
60:6=10
10=10


9x=99
x=99:9
x=11
_____________
9•11=99
99=99

x+86=98
x=98-86
x=12
______________
12+86=98
98=98