Resolvas as e quações : a)x + 8 = 10 b)x -5 =12 c)x - 2=-7 d) x + 6=-3 e)4x + 7 =9 f) 7x - 3 =4 g)2x - 5 =13 h)5x - 3 =2 i)x - 3 =10 j)2x - 7 = -3x+8 k)2+ 4x =6-8x l)5x-4=11 m) 8x -4=12x - 20 n)43x-8=15-32x o)9x-4=x+5-3x
Soluções para a tarefa
Resposta:
a)x + 8 = 10
x = 10 - 8
x = 2
b)x -5 =12
x = 12 + 5
x = 17
c)x - 2=-7
x = -7 +2
x = -5
d) x + 6=-3
x = -3 -6
x = -9
e)4x + 7 =9
4x = 9 - 7
4x = 2
x = 2/4
x = 1/2
f) 7x - 3 =4
7x = 4 + 3
7x = 7
x = 7/7
x = 1
g)2x - 5 =13
2x = 13 +5
2x = 18
x = 18/2
x = 9
h)5x - 3 =2
5x = 2 + 3
5x = 5
x = 5/5
x = 1
i)x - 3 =10
x = 10 + 3
x = 13
j)2x - 7 = -3x+8
2x + 3x = 8 + 7
5x = 15
x = 15/5
x = 3
k)2+ 4x =6-8x
4x + 8x = 6 -2
12x = 4
x = 4/12
x = 1/3
l)5x-4=11
5x = 11 + 4
5x = 15
x = 15/5
x = 3
m) 8x -4=12x - 20
8x -12x = -20 +4
-4x = -16
x = -16/-4
x = +4
n)43x-8=15-32x
43x +32x = 15 +8
75x = 23
x = 23/75
o)9x-4=x+5-3x
9x -x +3x = 5 +4
8x + 3x = 9
11x = 9
x = 9/11
Explicação passo a passo: