Question

Resolva as equações e determine o valor de x:
a) x+3=2x-1
b) 4x+1=-3
c) 2x+8=2-x
d)8x+2-1=-x
e)4x+2-x=3-2x
f)5x+1=-4
g)4x+3=-1
h)8x+8=-4+x
i) 7x+1=7+x
j)2x+1-x=3+x

Answer 1

Explicação passo-a-passo:

a)

x - 2x = -1 + 3

-x = 2

b)

4 x=-3 + 1

4 x= -2

x=-2÷4

x= -0,5

c)

2 x + x=2-8

3x= -6

x= -6÷3

x=-2

d)

8 x + x= 1-2

9x= -1

x=-1÷9

x=-0,111..

e)

4 x - x + 2x=3-2

5 x = 1

x=1÷5

x=0,2

f)

5 x= -4 - 1

5 x = - 5

x=-5 ÷ 5

x=-1

g)

4 x = - 1-3

4 x = - 4

x=- 4 ÷4

x=-1

h)

8 x - x = - 4 - 8

7x= -12

i)

7 x -x= 7 - 1

6x=6

x=6÷6

x=1

j)

2 x - x -x=3-1

0x=2