1) (2,6+3,7)*5=6,3*5=31,5
2) (18,07-6,03)*8=12,04*8=96,32
3) (24,95+17,8)*9=42,75*9=384,75
4) (48,316-19,83)*20=28,486*20=569,72
5) (15,07-8,9)*30=6,17*30=185,1
6) (2-0,7)*50=1,3*50=65
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Answers & Comments
1) (2,6+3,7)*5=6,3*5=31,5
2) (18,07-6,03)*8=12,04*8=96,32
3) (24,95+17,8)*9=42,75*9=384,75
4) (48,316-19,83)*20=28,486*20=569,72
5) (15,07-8,9)*30=6,17*30=185,1
6) (2-0,7)*50=1,3*50=65