Question

Resolva as Equações:
a)5x+3x=16
b)x+x+8=54
c)7x-2-5x=18
d)12x-10x-4=3
e)-x-2x-4=11
f)8x=5x+4,5

Answer 1

Resposta:

Explicação passo-a-passo:

a)

5X+3X=16

8x = 16

x = $\frac{16}{8}$

x=2

-----------------------------------------------------------

b) x +x  + 8 =54

2x= 54-8

2x=46

x=  $\frac{46}{2}$  = 23

c)

7x - 2 -5x=18

7x-5x=18+2

2x=20

x = $\frac{20}{2}$ = 10

d)

12x-10x-4=3

2x=3+4

2x = 7

x =$\frac{7}{2}$

e)

-x-2x-4=11

-3x=15

x= $\frac{15}{-3}$

x= -5

f)

8x= 5x +4,5

8x-5x=4,5

3x=4,5

x=$\frac{4,5}{3}$

x =1,5