Question

3) 1,7(a-4)+0,6(6-2a);
4) 1,5(8x-6y)-(5y-3x)•2,4;
5)-(4,3x-2,4)-(5,8-2,6x);

Answer 1

Ответ:

Пошаговое объяснение:

3) 1,7(a-4)+0,6(6-2a)=1.7a-6.8 + 3.6-1.2a=0.5a-3.2;

4) 1,5(8x-6y)-(5y-3x)•2,4=12x-9y-12y+7.2x = 19.2x-21y;

5)-(4,3x-2,4)-(5,8-2,6x)= -4.3x+2.6x+2.4-5.8 =-1.7x-3.4.