resolva as equações 21x-7(33-x)=3(21x-14)+44
21x-7(33-x)=3(21x-14)+44
21x-231+7x=63x-42+44
21x+7x-63x=-42+44+231
-35x=233
-x=233/35
x=-233/35
21x-7(33-x)=3(21x-14)+44
2 1 x - 2 3 1 + 7 x = 6 3 x - 4 2 + 4 4
2 8 x - 2 3 1 = 6 3 x - 4 2 + 4 4
2 8 x - 2 3 1 = 6 3 x + 2
- 2 3 1 = 6 3 x + 2 - 2 8 x
- 2 3 1 = 3 5 x + 2
- 2 3 1 - 2 = 3 5 x
- 2 3 3 = 3 5 x
-233/35 =x
x=-233/35
