Resolva as equações
(A)(3x-4)+(2x+11)=0
(B)(3x-4)-(-2x+11)=0
(C)5x-8-(3x+9)=-(x+2)
(D)8+(x-3)=6-(x+8)
Soluções para a tarefa
(A) (3x - 4) + (2x + 11) = 0
3x - 4 + 2x + 11 = 0
3X + 2X - 4 + 11 = 0
5X + 7 = 0
5X = -7
X = -7/5
(B) (3x - 4) - (-2x + 11) = 0
3X - 4 + 2X - 11 = 0
3X + 2X - 4 - 11 = 0
5X - 15 = 0
5X = 15
X = 15
5
X= 3
(C) 5x - 8 -(3x + 9) = -(x + 2)
5X - 8 - 3X - 9 = -X - 2
5X - 3X - 8 - 9 = -X - 2
2X - 17 = -X - 2
2X + X = -2 + 17
3X = 15
X = 15
3
X = 5
(D) 8 + (x - 3) = 6 -(x + 8)
8 + X - 3 = 6 - X - 8
X + 8 - 3 = -X + 6 - 8
X + 5 = -X - 2
X + X = -2 + 5
2X = 3
X = 3
2
Explicação passo-a-passo:
A) (3x-4) + (2x+11) = 0
3x - 4 + 2x + 11 = 0
3x + 2x = 4 - 11
5x = -7
x = -7/5
B) (3x-4) - (-2x+11) =0
3x - 4 + 2x - 11 = 0
3x +2x = 4 + 11
5x = 15
x = 3
C) 5x-8-(3x+9) = -(x+2)
5x - 8 - 3x - 9 = -x - 2
5x - 3x + x = - 2 + 8 + 9
3x = 15
x = 5
D) 8+(x-3) = 6-(x+8)
8 + x - 3 = 6 - x - 8
x + x = 6 - 8 - 8 + 3
2x = -7
x = -7/2