Question

Ma poate ajuta cineva la ex 7?

Answer 1

$a) \:( - 3 + 100 + 3) \div ( - 100) = 100 \div ( - 100) = - 1 \\ b) \: (( - 250 - 45 + 85) \div 15) \times 10 \\ (( - 295 + 85) \div 15) \times 10 = ( - 210 \div 15) \times 10 = \\ - 14 \times 10 = - 140 \\ c) \: ( - 144) \div (396 - 720 - ( - 7 + (6590 + 10710) \div ( - 100))) \\ ( - 144) \div ( - 324 - ( - 7 + 17300 \div ( - 100))) = ( - 144) \div ( - 324 - ( - 7 - 173)) = \\ ( - 144) \div ( - 324 - ( - 180)) = ( - 144) \div ( - 324 + 180) = ( - 144) \div ( - 144) = 1$

$d) \: 24 \div ((30 + 30) \div 60 + 2) + 15 \div 3 = \\ 24 \div (60 \div 60 + 2) + 5 = 24 \div 3 + 5 = 8 + 5 = 13$