Question
ચકાસો : $(-23) \times 20 = 23 \times (-20)$

Answer

ડા.બા. $= (-23) \times 20 = -(23 \times 20) = -(460) = (- 460)$
જ.બા. $= 23 \times (-20) = -(23 \times 20) = -(460) = (-460)$
$\therefore$ ડા.બા. $=$ જ.બા.
$\therefore$ $(- 23) \times 20 = 23 \times (-20)$ સાચું છે.

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