Question

X : 0,25 + 6 x X = 12,81 + 7,19

help me!!!!

Answer 1

\(x:0,25+6.x=12,81+7,19\)

\(x.4+6.x=20\)

\(x.\left(4+6\right)=20\)

\(x.10=20\)

\(x=20:10\)

\(x=2\)

~ Hok tốt ~

Answer 2

\(x:0,25+6\times x=12,81+7,19\)

\(\Leftrightarrow x:\frac{25}{100}+6\times x=20\)

\(\Leftrightarrow x:\frac{1}{4}+6\times x=20\)

\(\Leftrightarrow x\times4+6\times x=20\)

\(\Leftrightarrow x\times(4+6)=20\)

\(\Leftrightarrow x\times10=20\)

\(\Leftrightarrow x=20:10=2\)

Vậy x = 2

Answer 3

X:0,25+6xX=12,81+7,19

Xx4+6xX=20

Xx(6+4)=20

Xx10=20

X=20:10

X=2