Question

\(\left[\left(6x-72\right):2-84\right].28=5628\)

Help me ! Đề bài là Tìm x nha , giúp vs ! Mai đi hc r`

Answer 1

\(\left[\left(6x-72\right):2-84\right].28=5628\)\(\Rightarrow\left(6x-72\right):2-84=5628:28=201\)

\(\Rightarrow\left(6x-72\right):2=201+84=285\)

\(\Rightarrow6x-72=285.2=570\)

\(\Rightarrow6x=570+72=642\)

\(\Rightarrow x=\frac{642}{6}=107\)

 

Answer 2

[(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

Answer 3

mình làm vắng tắt.

6x = 5628/28 + 84 * 2 +72

6x = 642

x = 642/6 = 107