Question

x×2 + x×3 + x×4 = 225

Answer 1

\(x\times\left(2+3+4\right)=225\\ x\times9=225\\ x=25\)

Answer 2

\(2x+3x+4x=225\)

⇔\(9x=225\)

⇔\(x=25\)

Answer 3

X x 2 + X x 3 + X x 4 = 225

X x ( 2 + 3 + 4 ) = 225

X x 9 = 225

X = 225 : 9

X = 25

Answer 4

X x 2 + X x 3 + X x 4 = 225

X                                = 225 : (2 + 3 + 4)

X                                = 25.