Find the value of the variable that satisfies the equation. A)12-19= -7x

8 Answers | Add Yours

durbanville's profile pic

durbanville | High School Teacher | (Level 2) Educator Emeritus

Posted on

12-19 = -7x

In this equation, x is the variable so we must solve for x:

First simplify:

-7 = -7x

Now to get x (the variable) by itself, we need to divide both sides by -7:

`-7/-7 = (-7x)/-7`   

`therefore1=x`

`therefore` x=1

To check that this satisfies the equation, substitute x=1 into

12-19= -7x

`therefore` -7=-7 (1)

`therefore -7=-7`

Therefore x=1 satisfies the equation

 

Sources:
Wiggin42's profile pic

Wiggin42 | Student, Undergraduate | (Level 2) Valedictorian

Posted on

12 -19 = -7x

We want to solve for x. First see if you can simplify either side of the equation. 

Here we can. So we get: 

-7 = -7x 

To get x by itself, we divide by -7. This makes: 

1 = x

maria-vivanco's profile pic

maria-vivanco | Student, Grade 11 | (Level 1) Valedictorian

Posted on

X=1

zumba96's profile pic

zumba96 | Student, Grade 11 | (Level 3) Valedictorian

Posted on

12-19= -7x

Simplify

-7=-7x

Then divide by -7

x=1

taangerine's profile pic

taangerine | Student, Grade 12 | (Level 1) Valedictorian

Posted on

To solve this equ, we should:

  • Rewrite: 12-19= -7x
  • Subtract & Simplify: -7=-7x
  • Isolate the variable by dividing -7 from both sides: `(-7/-7)=(-7x)/(-7)`
  • Simplify, and our answer should be x=1
jess1999's profile pic

jess1999 | Student, Grade 9 | (Level 1) Valedictorian

Posted on

12 - 19 =  -7x

To solve this equation , first combine the like terms . By combining the like terms , you should get

-7 = -7x now we have to try to get " x " alone . In order to get " x " alone divide by -7 on both sides

By dividing by -7 on both sides , you should get

x = -1 which is your answer

atyourservice's profile pic

atyourservice | Student, Grade 11 | (Level 3) Valedictorian

Posted on

A)12-19= -7x

combine like terms

-7=-7x

divide both sides by -7

`-7/7 = (-7x)/-7`

1=x

We’ve answered 318,989 questions. We can answer yours, too.

Ask a question