( X + 175 ) : 5 + 30 =420 + 65 x 4

 ( X + 175 ) : 5 + 30 = 680

 ( X + 175 ) : 5        = 680 - 30 = 650

 ( X + 175 )             = 650 x 5 = 3250

   X                        = 3250 - 175 = 3075

( X + 175 ) : 5 + 30 = 420 + 65 x 4

( X + 175 ) : 5 + 30 = 420 + 260

( X + 175 ) : 5 + 30 = 680

( X + 175 ) : 5=680-30

( X + 175 ) : 5=650

X + 175=650x5

X + 175=3250

X=3250-175

X=3075

420+65.4=(x+175):5+30

=> 420 + 260 = ( x + 175 ) : 5 + 30

=> 680 = ( x + 175 ) : 5 + 30 <=> ( x + 175 ) : 5 + 30 = 680

=> ( x + 175 ) : 5 = 650

=> x + 175 = 3250

=> x = 3075

420+65.4=(X+175):5+30

=>420+260=(X+175):5+30

=>680=(X+175):5+30

=>680-30=(X+175):5

=>650=(X+175):5

=>650.5=X+175

=>3250=X+175

=>X=3250-175

=>X=3075

460 + 85 *4 = x + 175 / 5 + 30

460 + 340 = x + 35 + 30

800 = x + 65

x = 800 - 65

x = 735

 460 +  85 *4 = x + 175 :5 +  30    

    460 + 340  = x + 35 + 30

           800     = x + 65

            x         = 800 - 65 = 735

460+85*4=x+\(\frac{175}{5}\)+30

460+340=x+35+30

800=x+65

x=800-65=735

420 + 65 x 4 = ( x + 175 ) : 5 + 30

( x + 175 ) : 5 + 30 = 420 + 65 x 4

( x + 175 ) : 5 + 30 = 420 + 260

( x + 175 ) : 5 + 30 = 680

( x + 175 ) : 5 = 680 - 30

( x + 175 ) : 5 = 650

 x + 175 = 650 x 5 

 x + 175 = 3250

          x = 3250 - 175

          x = 3075

Bài dễ không làm. 

3075 bai de ma tinh mot ti la xong

420 + 65 . 4 = ( x + 175 ) : 5 + 30

420 + 260 = ( x + 175 ) : 5 + 30

680 = ( x + 175 ) : 5 + 30

680 - 30 = ( x + 175 ) : 5

650 = ( x + 175 ) : 5

650 . 5 = x + 175

3250 = x + 175

x = 3250 - 175

x = 3075

420+260=(x+175):5+30

680=(x+175):5+30

680-30=(x+175):5

650x5=x+175

3250=x+175

X=3250-175

X=3075

\(420+65.4=\left(x+175\right):5+30\)

\(680=\left(x+175\right):5+30\)

\(\left(x+175\right):5=680-30\)

\(\left(x+175\right):5=650\)

\(x+175=650.5\)

\(x+175=3250\)

              \(x=3250-175\)

              \(x=3075\)

dễ mà 460 + 85 * 4 = x + 175 : 5 + 30

          460 + 340    = x + 35 + 30

              800         = x + 65

           800 - 65 = x

             735     = x hay x = 735

420 + 65 . 4 = ( x + 175 ) : 5 + 30 

=> ( x + 175 ) : 5 + 30 = 420 + 45 . 4 

=> ( x + 175 ) : 5 + 30 = 600 

=> ( x + 175 ) : 5 = 600 - 30 

=> ( x + 175 ) : 5 = 570 

=> x + 175 = 570 . 5 

=> x + 175 = 2850 

=> x = 2850 - 175 

=> x = 2675 

nha bn 

các câu khác tương tự nhé 

nhớ ủng hộ mik nha mn 

\(\text{Tìm x hở e????}\)

~~~~~~~~~

\(\text{420 + 65 . 4 = ( x + 175 ) : 5 + 30}\)

\(420+260=\left(x+175\right):5+30\)

\(680=\text{ ( x + 175 ) : 5 + 30}\)

\(\text{ ( x + 175 ) : 5 + 30=680}\)

\(\text{ ( x + 175 ) : 5 =680-30}\)

\((x+175):5=650\)

\(x+175=650:5\)

\(x+175=130\)

\(x=130-175\)

\(x=-45\)

\(\text{(32.15) : 2 = (x + 70) : 14 - 40}\)

\(480:2=\text{ (x + 70) : 14 - 40}\)

\(240\text{ = (x + 70) : 14 - 40}\)

\(\text{ (x + 70) : 14 =280}\)

\(x+70=3920\)

\(x=3920-70\)

\(x=3850\)

\(\text{x - 4867 = ( 175 . 2050 . 76) + 25 + 23}\)

\(\text{x - 4867 = ( 175 . 2050 . 76) + 48}\)

\(x-4867=27265000+48\)

\(x-4867=27265048\)

\(x=27265048+4867\)

\(x=27260015\)

\(\text{Hok giỏi nhé!~!!}\)