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# Title: Leibniz-Handschriften zur Philosophie LH 4, 5, 10
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21 Jumi
Demonstratio pure Analybica
Quod minus in
minus
mas, facit plus:
Situa posit. + X = b
duom
1 In.... + f
as
=CX
+ fx - bf
Ajo esse  aequalebf.
propositio I
ima
posita X aequ. b.
ajo esse 6 aequ.+B + bc.
Demonstratio:
Nam quia X aequ, b. erit X = b aequ. 0. ergo X - b in
saequale
f - c dabit a. (quia si nihilo ducatur in quidvis, productum
erit nihilo aequale). Ergo Est autem X - b in f-c idem
quod
X = cX = b f. O, ut ostendimus; ergo fiet
+ fX - cX - bf. O, aequ. 0.
seu quod idem est fiet
 aequ. Cx + b f - fX. Nursus quia X aequ. b Bursus quia
 bfiet.. fX, aequ. B +bf
hinc
d aqes bes
item...
item fiet .. .. +bC aequ. +CX
Ergo aequalibus addendo aequalia fiet + fX + bc aequ. CX + b)
paule ante
Ergo + bC aequ. +Cx + b f - fX. sed supra. O erat
etiam wqu. +CX + bf - fX. ergo erit  aequ. +bc
quod in emae demonstrandum proponebatur