Question

Resolva as equações:

a)9 - x =2x

b)8 + 4x = 6x - 4

c)3x + 1 = x + 9

d)4x - 11 = 7 - 2x

e)3x + 1 = 5 + x​

Answer 1

Resposta:

Explicação passo-a-passo:

a)9 - x =2x

-x-2x=-9

-3x=-9

X=-9/-3 (-1)

X=3

b)8 + 4x = 6x - 4

4x-6x=-4-8

-2x=-12

X=-12/-2 (-1)

X=6

c)3x + 1 = x + 9

3x-x=9-1

2x=8

X=8/2

X=4

d)4x - 11 = 7 - 2x

4x+2x=7+11

6x=18

X=18/6

X=3

e)3x + 1 = 5 + x

3x-x=5-1

2x=4

X=4/2

X=2