Question

Раскройте скобки и выражение -(7/22+x)+3/11*(x-1/2) -(2/9-x)+5/18*(2/15+x)

Answer 1

1) 
-(7/22+x)+3/11*(x-1/2) = -7/22-х+3/11х-3/11*1/2 = -7/22 - 11/11х + 3/11х - 3/22 = -10/22 - 8/11х = -10/22 - 16/22х = -2/22*(5+8х) = -1/11*(5+8х)
2)
-(2/9-x)+5/18*(2/15+x) = -2/9+х+5/18*2/15+5/18х = -4/18+27/27х+1/27+5/18х = -12/54+54/54х+2/54+15/54х = 69/54х-10/54 = 1/54*(69х-10)

Answer 2

$-( \frac{7}{22} +x)+ \frac{3}{11} *(x- \frac{1}{2} )=- \frac{7}{22} -x+ \frac{3}{11} x- \frac{3}{22} =- \frac{5}{11} - \frac{8}{11} x$
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$-( \frac{2}{9} -x)+ \frac{5}{18} *( \frac{2}{15} +x)=- \frac{2}{9} +x+ \frac{1}{27} + \frac{5}{18} x=- \frac{5}{27} +1 \frac{5}{18} x$