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1.-10+2в=-3в
2.[tex] \frac{1}{3} [/tex] х+1=-2
3.5а-21=24
4.[tex] \frac{c+4 }{6} [/tex]=[tex] \frac{1}{2} [/tex]
5.[tex] \frac{3c-2}{8} [/tex]=[tex] \frac{c+4}{6} [/tex]
1.-10+2в=-3в
2.[tex] \frac{1}{3} [/tex] х+1=-2
3.5а-21=24
4.[tex] \frac{c+4 }{6} [/tex]=[tex] \frac{1}{2} [/tex]
5.[tex] \frac{3c-2}{8} [/tex]=[tex] \frac{c+4}{6} [/tex]
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Answers & Comments
2)x/3+1=-2, x+3=-6, x=-6-3, x=-9
3)5a-21=24, 5a=24+21, 5a=45, a=9
4)(c+4)/6=1/2, c+4=6.1/2, c+4=6/2, c+4=3,c=3-4, c=-1
5)(3c-2)/8 = (c+4)/6 /.24
3(3c-2)=4(c+4)
9c-6=4c+16, 9c-4c=16+6, 5c=22, c=22/5, c=4,4