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Calculează. (m-416:4+2)×5=1980

Răspuns :

m-416:4+2= 1980: 5
m-416:4=396-2
m-416=394*4
m=1576+416
m=1992
m-416:4+2=396
m=396-2 +104
m=394+104
m=498