717....по действиям...........

Question

717....по действиям...........

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Answer 1

1)5(2+a)=10+5a
2)-(5+b)=-5-b
3)-(c-3)=-c+3=3-c
4)-0.4(6-x)=-2.4+0.4x=0.4x-2.4
5)-1.3(y+z)=-1.3y-1.3z
6)9.1(10+t)=91+9.1t