Question

420 + 65 × 4 = (x + 175) ÷ 5 + 30

Answer 1

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

Answer 2

Bài dễ không làm. 

Answer 3

3075 bai de ma tinh mot ti la xong

Answer 4

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

680= ( x + 175 ) : 5 + 30

( x + 175 ) : 5 + 30=680

( x + 175 ) : 5 =680-30

(x+175):5=650

x+175=650:5

x+175=130

x=130−175

Answer 5

680=(x+175):5+30

(x+175):5+30=680

(x+175):5=680−30

(x+175):5=650

x+175=650:5

x+175=130

Answer 6

680=(x+175):5+30

(x+175):5+30=680

(x+175):5=680−30

(x+175):5=650

x+175=650:5

x+175=130

Answer 7

680=(x+175):5+30

(x+175):5+30=680

(x+175):5=680−30

(x+175):5=650

x+175=650:5

x+175=130

Answer 8

kql:3075

Answer 9

k cho tui đi