Question

Giúp mình giải bài toán này với 2/7.x+20%.x=7/4

Answer 1

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 

Answer 2

X = \(\frac{1}{340}\)

TÍCH MIK NHA Dương Anh Kiệt

HÃY TÍCH CHO MIK 1 TÍCH THÔI CŨNG ĐƯỢC

Answer 3

=) x*(2/7+1/5)=7/4

=)x*(10/35+7/35)=7/4

=)x*17/35=7/4

=)245/68

Answer 4

\(\frac{2}{7}.x+20\%.x=\frac{7}{4}\)

\(\frac{2}{7}.x+\frac{1}{5}.x=\frac{7}{4}\)

\(\left(\frac{2}{7}+\frac{1}{5}\right).x=\frac{7}{4}\)

\(\frac{17}{35}.x=\frac{7}{4}\)

\(x=\frac{7}{4}:\frac{17}{35}\)

\(x=\frac{7}{4}.\frac{35}{7}\)

\(x=\frac{245}{28}\)

Answer 5

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