Question

Tim x ; 420+65x4=(x+175):5+30

           (32x15):2=(x+70):14-40

 

 

Answer 1

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

=> x + 175 = 650 . 5 = 3250.

=> x = 3250 - 175

=> x = 3075.

(32 . 15) : 2 = (x + 70) : 14 - 40

=> 480 : 2 = (x + 70) : 14 - 40

=> 240 = (x + 70) : 14 - 40

=> x + 70 = 240 + 40 = 280

=> x = 280 - 70 = 210

Answer 2

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

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

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

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

\(650.5=x+175\)

\(3250=x+175\)

\(x=3075\)

vay \(x=3075\)

\(\left(32.15\right):2=\left(x+70\right):14-40\)

\(480:2=\left(x+70\right):14-40\)

\(240+40=\left(x+70\right):14\)

\(280=\left(x+70\right):14\)

\(280.14=x+70\)

\(3920=x+70\)

\(3850=x\)

vay \(x=3850\)

Answer 3

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

420+260     =( X+175) :5+30

680            =(X+175) :5 +30

650            =(X+175 ):5

X+175        =650 x 5

X+175        = 3250

X                =3075