[(6x-72):2-84].28= 5628
=>(6x-72):2-84=5628:28
=>(6x-72):2-84=201
=>(6x-72):2=201+84
=>(6x-72):2=285
=>6x-72=285.2
=>6x-72=570
=>6x=570+72
=>6x=642
=>x=642:6
=>x=107
((6X - 72) : 2 - 84).28 = 5628
(6X - 72) : 2 - 84 = 5628 : 28
(6X - 72) : 2 - 84 = 201
(6X - 72) : 2 - 84 = 201 + 84
(6X - 72) : 2 = 285
6X - 72 = 285 X 2
6X - 72 = 570
6X = 570 + 72
6X = 642
X = 642 : 6
X = 107
[(6x-72):2-84].28= 5628
[(6x-72):-82].28= 5628
[(6x-72):-82] =5628 : 28
[(6x-72):-82] = 201
6x-72 = 201.-82
6x-72 = -16482
6x = -16482:6
x = -2747
[(6x-72) : 2 - 84]. 28 = 5628
(6x-72):2-84 = 5628 : 28
(6x-72):2-84 = 201
(6x-72):2 = 201+ 84
(6x-72):2= 285
6x-72= 285 . 2
6x-72=142,5
6x= 142,5 + 72
6x= 214,5
x= 214,5 : 6
x= 35,75
vậy x = 35,75
sorry
mik tính nhầm nhaaa
làm theo cách bạn @Dưa Hấu ARMY là đúng đó
\(\left[\left(6x-72\right):2-84\right]\cdot28=5628\)
\(\Rightarrow\left[\left(6x-72\right):2-84\right]=201\)
\(\Rightarrow\left(6x-72\right):2=285\)
\(\Rightarrow9x-72=570\)
\(\Rightarrow9x=642\)
\(x=\frac{642}{9}\)