Zapisz jak najprościej 4(x - 2) + 2(7 - x) = x(y - 4) + 2(xy - 30)= 3a(b - 3) - 2b(a -3)= 3a - (a + 1)=

4(x - 2) + 2(7 - x) =4x-8+14-2x=2x+6 x(y - 4) + 2(xy - 30)=xy-4x+2xy-60=3xy-64 3a(b - 3) - 2b(a -3)=3ab-9a-2ba+6b=ab-9a+6b 3a - (a + 1)= 3a-a-1= 2a-1

1) 4(x-2)+2(7-x)=4x-8+14-2x=2x+6 2)x(y-4)+2(xy-30)=xy-4x+2xy-60=3xy-4x-60 3)3a(b-3)-2b(a-3)=3ab-9a-2ab-6b=ab-9a-2ab 4)3a-(a+1)=3a-a-1=2a-1

4x-8+14-2x= 2x+6 1xy-4x+2xy-60= 3xy-4x-60 3ab-9a-(2ab-6b)= 3ab-9a-2ab+6b 3a-a-b= 2a-b