1)-3(4+5m-6n)=-12-15m+18n
2)-0,2(-14t+z-25y)=2,8t-0,2z+5y
3)(-3,1x+7,8y-9,6)•0,1=-0,31x+0,78y-0,96
4)(0,7x-0,6y+0,5z)•(-1,5p)= -1,05xp+0,9yp-0,75zp
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Answers & Comments
1)-3(4+5m-6n)=-12-15m+18n
2)-0,2(-14t+z-25y)=2,8t-0,2z+5y
3)(-3,1x+7,8y-9,6)•0,1=-0,31x+0,78y-0,96
4)(0,7x-0,6y+0,5z)•(-1,5p)= -1,05xp+0,9yp-0,75zp