Toán Lớp 6: (-75)+(-37)
(-24) .82+24. (-18) -87
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Toán Lớp 6: (-75)+(-37)
(-24) .82+24. (-18) -87
Comments ( 2 )
a)(-75)+(-37)=-112
b) (-24)*82+24*(-18)-87
=24*(-82)+24*(-18)-87
=24*[(-82)+(-18)] -87
=24*(-100)-87
=-2400-87
=-2487
$\text{( -75 ) + ( -37 )}$
$\text{= -( 75 + 37 )}$
$\text{= -112}$
$\text{—————————}$
$\text{( -24 ). 82 + 24. ( -18 ) – 87}$
$\text{= 24. ( -82 ) + 24. ( -18 ) – 87}$
$\text{= 24. [ ( -82 ) + ( -18 )] – 87}$
$\text{= 24. ( -100 ) – 87}$
$\text{= -2400 – 87}$
$\text{= -2487}$