Question

qual são as resposta dessas equações?

a)-5x+13=2x-8

b)9x=6x+12

c)-5x-1=-3x+11

d)2x-8=-x+13

e)23x-16=14-17x

f)-12x+3=8x-7




​

Answer 1

Resposta:

a) x=3

b) x=4

c) x=-6

d) x=7

e) x=3/4

f) x=1/2

Explicação passo-a-passo:

a) -5x+13=2x-8

-5x-2x=-8-13

-7x=-21(-1)

7x=21

x=21/7

x=3

b)9x=6x+12

9x-6x=12

3x=12

x=12/3

x=4

c)-5x-1=-3x+11

-5x+3x=11+1

-2x=12(-1)

2x=-12

x=-12/2

x=-6

d)2x-8=-x+13

2x+x=13+8

3x=21

x=21/3

x=7

e)23x-16=14-17x

23x+17x=14+16

40x=30

x=30/40

x=3/4

f)-12x+3=8x-7

-12x-8x=-7-3

-20x=-10(-1)

20x=10

x=10/20

x=1/2