Question

Tìm x:

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

Answer 1

\(420+65\times4=\frac{x+175}{5}+30\)

\(\frac{x+175}{5}=420+260-30\)

\(\frac{x+175}{5}=650\)

\(x+175=650\times5\)

\(x+175=3250\)

x = 3250 - 175

x = 3075

Answer 2

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

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

680=(x+175):5+30

680-30=(x+175):5

650=(x+175):5

650x5=x+175

3250=x+175

x=3250-175

x=3075