Question

1- Resolva as equações

a) x+2x-3=x
b) -3x-10=2x+8+1
c) 5x-5+x=9+x
d) 7x-4-x=2x+8-3x
e) 3x-2x=3x+2
f) 2-4x=32-18x+12
g) 2x-1=-3+x+4
h) 3x-2-2x=3=0​

Answer 1

Explicação passo-a-passo:

Resolva as equações

a) x+2x-3=x

<=>x+2x-x=3

<=>2x=3

<=>x=3/2

b) -3x-10=2x+8+1

<=>-3x-2x=9+10

<=>-5x=19

<=>x=-19/5

c) 5x-5+x=9+x

<=>5x+x-x=9

<=>5x=9

<=>x=9/5

d) 7x-4-x=2x+8-3x

<=>7x-x-2x+3x=8+4

<=>7x=12

<=>x=12/7

e) 3x-2x=3x+2

<=>3x-2x-3x=2

<=>-2x=2

<=>x=-2/2

f) 2-4x=32-18x+12

<=>-4x+18x=32+12-2

<=>14x=42

<=>x=42/14

g) 2x-1=-3+x+4

<=>2x-x=-3+4+1

<=>x=2

h) 3x-2-2x=3=0