50%x+2x=-13,25
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a)
\(\frac{2}{3}+\frac{1}{3}:x=\frac{3}{5}\)
\(\frac{1}{3}:x=\frac{3}{5}-\frac{2}{3}\)
\(\frac{1}{3}:x=\frac{-1}{15}\)
\(x=\frac{1}{3}:\frac{-1}{15}\)
\(x=-5\)
b)
\(\frac{10}{3x}+\frac{67}{4}=-13.25\)
\(\frac{10}{3x}+\frac{67}{4}=\frac{-53}{4}\)
\(\frac{10}{3x}=\frac{-53}{4}+\frac{67}{4}\)
\(\frac{10}{3x}=\frac{7}{2}\)
\(\Rightarrow10.2=7.3x\)
\(20=21x\)
\(x=\frac{20}{21}\)
c)
x+30%x=-1.3
x+0.3x=-1.3
x (1+0.3) = -1.3
x . 1.3 = -1.3
x = -1.3 : 1.3
x = 1
d)
\(\left(\frac{14}{5x}-50\right):\frac{2}{3}=51\)
\(\frac{14}{5x}-50=51.\frac{2}{3}\)
\(\frac{14}{5x}-50=34\)
\(\frac{14}{5x}=34+50\)
\(\frac{14}{5x}=84\)
\(84.5x=14\)
420x = 14
\(x=\frac{1}{30}\)
a, \(\frac{2}{3}+\frac{1}{3}:x=\frac{3}{5}\)
=> \(\frac{1}{3}:x=\frac{3}{5}-\frac{2}{3}\)
=>\(\frac{1}{3}:x=\frac{-1}{15}\)
=> \(x=\frac{1}{3}:\frac{-1}{15}\)
=> \(x=\frac{-1}{5}\)
13,25*0,5+13,25*0,25+13,25*0,25
=13,25*(0,5+0,25+0,25)
=13,25*1
=13,25
= 13,25 x 2 + 13,25 x 4 + 13,25 x 8 + 13,25 x 6
= 13,25 x ( 2+4+8+6)
= 13,25 X 20
=265
13,25 : 0,5 + 13,25 : 0,5 + 13,25 : 0,125 + 13,25 x 6
= 13,25 x 2 + 13,25 x 2 + 13,25 x 8 + 13,25 x 6
= 13,25 x ( 2 + 2 + 8 +6 )
= 13,25 x 18
= 238,5
a. \(3\dfrac{1}{3}x+16=13,25\)
=> x + 16 = 13,25
=> x = 13,25 - 16
=> x = \(-\dfrac{11}{4}\)
b. x - 43 = (57 - x) - 50
=> 2x = 57 - 50 + 43
=> 2x = 7 + 43
=> 2x = 50
=> x = 50 : 2
=> x = 25
50%x + 2x =-13,25
1/2x + 2x = -13,25
x.( 1/2 + 2) = -13,25
x. 5/2 = -13,25
x = -13,25 : 5/2
x = -5,3
50%x+2x=-13,25
\(\frac{1}{2}\)x+2x=-13,25
\(\frac{5}{2}\)x=-13,25
x=-53/10