2/7.x+20%.x=7/4
=> 2/7.x+1/5.x = 7/4
=> x. ( 2/7+1/5)=7/4
=> x . 17/35 = 7/4
=> x = 7/4 : 17/35
=> x = 1/340
X = \(\frac{1}{340}\)
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=) x*(2/7+1/5)=7/4
=)x*(10/35+7/35)=7/4
=)x*17/35=7/4
=)245/68
\(\frac{2}{7}.x+20\%.x=\frac{7}{4}\)
\(\frac{2}{7}.x+\frac{1}{5}.x=\frac{7}{4}\)
\(\left(\frac{2}{7}+\frac{1}{5}\right).x=\frac{7}{4}\)
\(\frac{17}{35}.x=\frac{7}{4}\)
\(x=\frac{7}{4}:\frac{17}{35}\)
\(x=\frac{7}{4}.\frac{35}{7}\)
\(x=\frac{245}{28}\)
2/7.x+20%.x=7/4
=> 2/7.x+1/5.x = 7/4
=> x. ( 2/7+1/5)=7/4
=> x . 17/35 = 7/4
=> x = 7/4 : 17/35
=> x = 1/340
