Question

Resolva as equações
a)6x=2×+16
b) 2×-5=×+1
c)5×+7=4×+10
d)9×+9+3×=15
e)×+2×+3-5×=4×-9
f)4×-1=3(×-1)
g)7(×-4)=2×-3
h)3(3×-1)=2(3×+2)
i)5×-3(×+2)=15
j)2×+3×+9=8(6=-×) me ajudem pff

Answer 1

$a) \: 6x - 2x = 16 \\ \: 4x = 16 \\ x = \frac{16}{4} \\ x = 4$
$b) \: 2x - x = 1 + 5 \\ 1x = 6 \\ x = \frac{6}{1} \\ x = 6$
$c) \: 5x - 4x = 10 - 7 \\ 1x = 3 \\ x = \frac{3}{1} \\ x = 3$
$d) \: 9x + 3x = 15 - 9 \\ 12x = 6 \\ x = \frac{6}{12}$
$e) \: x + 2x - 5x - 4x = - 3 - 9 \\ 3x - 9x = 12 \\ - 6x = 12( - 1) \\ x = \frac{12}{6}$

Só consegui fazer essas... Espero ter ajudado, um abraço e bons estudos❤

Answer 2

a) 6x=2x+16
6x-2x=16
4x=16
x=16/4
x=4

b)2x-5=x+1
2x-x=1+5
x=6

c)5x+7=4x+10
5x-4x=10-7
x=3

d)9x+9+3x=15
9x+3x=15-9
12x=6
x=6/12
x=0,5

e)x+2x+3-5x=4x-9
x+2x-5x-4x=-9-3
-6x=-12 (-1)
6x=12
x= 12/6
x= 2

f)4x-1=3(x-1)
4x-1=3x-3
4x-3x=-3+1
x=-2

g)7(x-4)=2x-3
7x-28=2x-3
7x-2x=-3+28
5x=25
x=25/5
x=5

h)3(3x-1)=2(3x+2)
9x-3=6x+4
9x-6x=4+3
3x=7
x=7/3

i)5x-3(x+2)=15
5x-3x-6=15
2x=15
x=15/2

j)2x+3x+9=8(6-x)
2x+3x+9=48-8x
2x+3x+8x=48-9
13x=39
x= 39/13
x=3