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abx=P/: ab
x=P/ab
R=ax/b /*b
bR=ax
ax=bR/:a
x=bR/a
S=a/bx / *bx
bxS=a/:bS
x=a/bS
T=1/abc / : abx
abxT=1 / :abx
x=1/abT
y=2t-3x
2t-3x=y
3x=2t-y
x=2t-y/3
y=2(x+10
2x+2=y / :2
x=y*2/2
2x=y+2 / :2
x=y+2/2
y=(x-1)/2 /*2
2y=x-1
x=2y+1
y=2/x-1
(x-1)y=2
xy-1y=2
xy=2+y /:y
x=2=y/y
p=1/3 (a do kw +2a)
p=1/3 a(do kwa) +2/3 ax /*3
3p=a(do kw) +2ax
x=3p-a(do kw) / 2a