a)\(\text{ -19+84+19+16 }\)
\(=\left(-19+19\right)+\left(84+16\right)\)
\(=0+100=100\)
\(\left(437-25\right)-\left(175+437\right)\)
\(=437-437-\left(25+175\right)=-200\)
\(c\))\(2^3.\left(-7\right).125\)
\(=\left(8.125\right).\left(-7\right)\)
\(=1000.\left(-7\right)=-7000\)
a). -19+84+19+16= 19+ (-84) +19+16= 19+ ( -84 + 16) = 19 + (-68 )= - 49
c). 23. (-7) . 125 = 8. (-7) . 125 = (125.8). (-7) = 1000. (-7 ) = -7000
d). (-17) . 39 + 17.( -161) = 17. (-39 ) + 17. (-161) = 17. \([\left(-39\right)+\left(-161\right)]\) = 17. (-200)= -3400
nhớ k cho mik nha <3
