17,5 - ( 6 + x ) = 8,74

6 + x = 17,5 - 8,74

6 + x = 8,76

x = 8,76 - 6

x = 2,76

\(17,5-\left(6+x\right)=8,74\)

\(11,5-x=8,74\)

\(x=11,5-8,74\)

\(x=2,76\)

1.5/10

217,5-(6+X)=8,74

6+X=217,5-8,74

6+X=208,76

X=208,76-6

X=202,76

1 . hàng chục

2 17,5-(6+x)=8,74

   6+x=17,5-8,74

6+x=8,76

x=8,76-6

x=2,76

nhầm 1 . phần mười

A, 17,5 - (6+x)=8,74

     6+x=17,5-8,74

     6+x=8,76

     x=2,76

B,3/5m³ =..600dm³

=>3/5m³<601dm³

C, 1m²112dm²=..2,12......m²

a.x + 4/5 = 3/5 +3/4

<=> x+ 4/5 = 27/20

<=>x =11/20

b,12/5 : x = 9/5 :1/2

<=>12/5 : x = 18/5

<=>x = 2/3

c,7,32 - x = 2,4 + 3,49

<=>7,32 - x = 5,89

<=>x = 3,43

\(\Rightarrow31,37< x< 34,24\)                                                                                                                                                              Vì x \(\in N\Rightarrow x\in\left\{32;33;34\right\}\)

\(\left[\frac{1}{2}-\frac{1}{3}+\frac{1}{4}\right]:\left[\frac{1}{6}-\frac{1}{x}\right]=17,5\)

\(\Rightarrow\frac{5}{12}:\left[\frac{1}{6}-\frac{1}{x}\right]=\frac{35}{2}\)

\(\Rightarrow\frac{1}{6}-\frac{1}{x}=\frac{5}{12}:\frac{35}{2}\)

\(\Rightarrow\frac{1}{6}-\frac{1}{x}=\frac{1}{42}\)

\(\Rightarrow\frac{1}{x}=\frac{1}{6}-\frac{1}{42}\)

\(\Rightarrow\frac{1}{x}=\frac{1}{7}\)

\(\Rightarrow x=1:\frac{1}{7}\)

\(\Rightarrow x=7\)

Học tốt # ^-<

help me

( 1/2 - 1/3 + 1/4 ) : ( 1/6 - 1/x ) = 17,5

( 6/12 - 4/12 + 3/12 ) : ( 1/6 - 1/x) = 17,5

5/12 : ( 1/6 - 1/x ) = 17,5

 1/6 : 1/ x = 5/12 : 17,5

  1/6 : 1/ x  = 1/42

  1/x = 1/6 : 1/42 

  1/x  = 7

    1 : x = 7

   x = 1:7

  x = 7

\(\frac{\frac{1}{2}-\frac{1}{3}+\frac{1}{4}}{\frac{1}{6}-\frac{1}{x}}=17.5\)

\(\frac{\frac{1}{6}+\frac{1}{4}}{\frac{1}{6}-\frac{1}{x}}=\frac{35}{2}\)

\(\frac{\frac{5}{12}}{\frac{1}{6}-\frac{1}{x}}=\frac{35}{2}\)

\(\frac{1}{6}-\frac{1}{x}=\frac{\frac{5}{12}}{\frac{35}{2}}\)

\(\frac{1}{6}-\frac{1}{x}=\frac{\frac{5}{12}}{\frac{35}{2}}\)

\(\frac{1}{6}-\frac{1}{x}=\frac{1}{42}\)

\(\frac{1}{x}=\frac{1}{6}-\frac{1}{42}\)

\(\frac{1}{x}=\frac{1}{7}\)

\(\Rightarrow x=7\)

CHÚC BẠN HỌC TỐT!!! :))