Question

Resolva essas equações:

l) 3(2X-5)=9-2x

M) Y+4=-15

N) 3X+9=12

O) 10-4X=9+2X

Socorro, me Ajuda por Favor!!!!!!!!!!​

Answer 1

3(2x-5)=9-2x

6x-15=9-2x

6x-15=-2x+9

6x-15+15=-2x+9+15

6x=-2x+9+15

6x=-2x+24

6x=-2x+24

6x+2x=-2x+24+2x

24x=24/8x=3

x=3

y+4=-15

y+4-4=-15-4

y= -19

y= -19

3x = 12 - 9

3x = 3

x = 3/3

x = 1

10 - 4x = 9 +2x

-4x+10 = 9+ 2x

-4x+10=2x+9

-4x+10-10=2x+9-10

-4x=2x-1

-4x-2x=2x-1-2x

x=

$\frac{1}{6}$