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1)![frac{2}{5} = frac{6}{x+3}
2(x+3)=6*5
2x+6=30
2x=24
x=12 frac{2}{5} = frac{6}{x+3}
2(x+3)=6*5
2x+6=30
2x=24
x=12](https://tex.z-dn.net/?f=+frac%7B2%7D%7B5%7D+%3D++frac%7B6%7D%7Bx%2B3%7D+%0A%0A2%28x%2B3%29%3D6%2A5%0A%0A2x%2B6%3D30%0A%0A2x%3D24%0A%0Ax%3D12)
2)![frac{5}{6} = frac{15}{2x-3}
5(2x-3)=15*6
10x-15=90
10x=105
x=10.5 frac{5}{6} = frac{15}{2x-3}
5(2x-3)=15*6
10x-15=90
10x=105
x=10.5](https://tex.z-dn.net/?f=+frac%7B5%7D%7B6%7D+%3D+++frac%7B15%7D%7B2x-3%7D+%0A%0A5%282x-3%29%3D15%2A6%0A%0A10x-15%3D90%0A%0A10x%3D105%0A%0Ax%3D10.5)
3)![12: frac{4}{5}x = 20: frac{1}{4} ; 12* frac{1}{4} = 20* frac{4}{5}x; 3=16x;x=0.1875 12: frac{4}{5}x = 20: frac{1}{4} ; 12* frac{1}{4} = 20* frac{4}{5}x; 3=16x;x=0.1875](https://tex.z-dn.net/?f=12%3A++frac%7B4%7D%7B5%7Dx+%3D+20%3A+frac%7B1%7D%7B4%7D+%3B+12%2A+frac%7B1%7D%7B4%7D+%3D+20%2A+frac%7B4%7D%7B5%7Dx%3B+3%3D16x%3Bx%3D0.1875)
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