Pitomath
Anonymous
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- asked 4 months agoVotes
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a)37⋅−19+37⋅−23;
b)−713⋅512+−713⋅712+−613;
c)−23+37:59+47−13:59;
d)59:111−522+59:115−23;
e)
a)37⋅−19+37⋅−23=37⋅−19+−23
=37⋅−19+−69
=37⋅−79=−13
b)−713⋅512+−713⋅712+−613
=−713⋅512+712+−613
=−713⋅1212+−613
=−713+−613=−1313=−1
c)−23+37:59+47−13:59
=−23+37⋅95+47−13⋅95
=95⋅−23+37+47−13
=95⋅−23−13+37+47
=95⋅(−1+1)=95.0=0.
d) 59:111−522+59:115−23
=59:222−522+59:115−1015
=59:−322+59:−915=59⋅−223+59⋅−53
=59⋅−223+−53=59.−273=59⋅(−9)=−5.
e) 35+311−−37+−297−135−34+−2344
=35−−37−135+311−34+−2344+−297
=2135+1535−135+1244−3344−2344+−297
=3535+−4444+−297=1+−1+−297=−297.
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