Respuesta :

Answer:

3x+10=-5

3x=-15

x=-5

3x-12=9

3x=21

x=7

Answer:

1. [tex]x=-5[/tex]

2. [tex]x=7[/tex]

Step-by-step explanation:

First Equation

1. For the first equation, [tex]3x+10=-5[/tex] we need to move all the constants to one side.

[tex]3x+10=-5\\3x=-15[/tex]

2. Once that is done, we need to divide both sides by 3 to get [tex]x[/tex] by itself.

[tex]3x=-15\\\frac{3x}{3}=\frac{-15}{3}[/tex]

3. Now, we have our final answer.

[tex]x=-5[/tex]

Second Equation

1. For the second equation, [tex]3x-12=9[/tex] we need to move all the constants to one side.

[tex]3x-12=9\\3x=21[/tex]

2. Once that is done, we need to divide both sides by 3 to get [tex]x[/tex] by itself.

[tex]3x=21\\\frac{3x}{3} =\frac{21}{3}[/tex]

3. Now, we have our final answer.

[tex]x=7[/tex]

Hope this helped C: