Question

me ajudem por favor!preciso de ajudaa

Answer 1

a) 7(x-7) + 3(2x+6)= 13x + 31
7x - 49 + 6x + 18= 13x + 31
7x + 6x - 49 +18= 13x + 31
13x - 31= 13x + 31
(F)

b) 8(x+4) + 6(x-3)= 14x + 14
8x + 32 + 6x -18= 14x + 14
8x + 6x + 32 - 18= 14x + 14
14x + 14= 14x + 14
(V)

c) -4(x-5) + 9(2x-1)= 14x + 11
-4x + 20 + 18x - 9= 14x + 11
-4x + 18x + 20 - 9= 14x + 11
14x + 11= 14x + 11
(V)

d) -9(2x-3) -2(x-3)= -20x + 33
-18x + 27 -2x + 6= -20x + 33
-18x - 2x + 27 + 6= -20x + 33
-20x + 33= -20x + 33
(V)