Question

Tìm  X biết: X x 62 + X x 38 = 4200

Answer 1

=> x . ( 62 + 38 ) = 4200

=> x . 100 = 4200

=> x = 4200 : 100

=> x = 42

Answer 2

\(x\times62+x\times38=4200\)

\(x\times\left(62+38\right)=4200\) 

\(x\times100=4200\)

\(x=4200:100\)

\(x=42\)

Answer 3

\(x\times62+x\times38=4200\)

\(x\times\left(62+38\right)=4200\)

\(x\times100=4200\)

\(x=4200\div100=42\)

Answer 4

X x 62 + X x 38 = 4200

X x ( 62 + 38 ) = 4200

X x 100 = 4200

X = 4200 : 100

X = 42

Vay x = 42

Co dung khong ban ?