Odpowiedzi

2010-03-10T15:58:53+01:00
A) 2(3x-6)+5(x+4) =6x-12+5x+20=1x-8
b) -3(2a+3)-4(2a-1)=-6a+(-9)-8a+4=-14a+(-5)
c) 4(5m-3)-3(7m+5)+2(4-m)= 20m-12-21m+15+8-2m=-3m-18
2010-03-10T16:01:03+01:00
A) 2(3x-6)+5(x+4)= 6x - 12 + 5x + 20 =11x + 8
b)-3(2a+3)-4(2a-1) = -6a - 9 - 8a + 4 = -14a - 5
c) 4(5m-3)-3(7m+5)+2(4-m)= 20m-12-21m-15+8-2m = -3m -19