1456 + x = 1567 x 7
1456 + x = 10969
x = 10969 - 1456
x = 9513
1465 + x : 7 = 1567
x : 7 = 1567 - 1465
x : 7 = 102
x = 102 x 7
x = 714
Tk chị nhé Quỳnh Anh
1465 + x : 7 = 1567
x : 7 = 1567 - 1465
x : 7 = 102
x = 102 x 7
x = 714
Đ/s: ...
x:7 = 1567-1465
x:7 = 102
x = 102x7
x = 714
1465+x:7=1567
x:7=1567-1465
x:7=102
x =102x7
x =714