Question

(x+0.3)+(x+0.7)+(x+1.1)+.......+(X+4.7)+(x+5.1)=48.1

Answer 1

\(\left(x+0.3\right)+\left(x+0.7\right)+......+\left(x+4.7\right)+\left(x+5.1\right)=48.1\)

\(x+0.3+x+0.7+......+x+4.7+x+5.1=48.1\)

\(\left(x+x+......+x\right)+\left(0.3+0.7+......+5.1\right)=48.1\)( 13 số x )

\(13x+35.1=48.1\)

\(13x=48.1-35.1=13\)

\(x=13:13=1\)

Answer 2

( x + 0.3 ) + ( x + 0.7 ) + ... + ( x + 5.1 ) = 48.1

( x + x + ... + x ) + ( 0.3 + 0.7 + .... + 5.1 ) = 48.1 ( có 13 số x )

13x + 35.1 = 48.1

13x = 13

x = 13 : 13 = 1