a) x-123=984
x=984+123
x=1107
b) x+123:2=999
x=999-(123:2)
x=937,5
a)x-123=123 x 8
x-123=984
x=984+123
x=1107
b)x+123:2=111 x 9
x+123:2=999
x+123 =999 x 2
x+123 =1998
x =1998-123
x =1875
đúng
A) X=123x8+123=1107
B)X=111x9 - 123 : 2= 999 - 61,5=937,5
a)x-123=123*8 b)x+123:2=111*9
x-123=984 x+132:2=999
x=984+123 x=(999*2)-132
x=1107 x=1998-132
x=1866
A.)x-123=123x8
x =123x8
x =984
x =984+123
x =1107
A/ X- 123=123*8
x-123=984
x=984+123
x=1107
23 = 123*8