dokea24 dokea24
  • 12-09-2020
  • Mathematics
contestada

-3x + 7= 28
what does x equal

Respuesta :

jotarokujo36
jotarokujo36 jotarokujo36
  • 12-09-2020
-3x+7=28
1st step move the seven to the other side of the equal sign and change it from positive to negative like this
-3x=21
Step 2 divide 21 by -3 and the answer will be -7
Answer Link
shownubear1992
shownubear1992 shownubear1992
  • 12-09-2020

Answer:

x = -7

Step-by-step explanation:

[tex]-3x+7=8[/tex] subtract 7 on both sides

[tex]-3x=21[/tex] divide -3 into both sides

[tex]x=-7[/tex]

To check

-3(-7) = 21 + 7=28

Answer Link

Otras preguntas

Calculate the force between two touching grape fruits each with a radius of 0.08 meters and a mass of 0.45 kilograms
what two object are the same distance from sea level? explain how you know
If a gas tank of a large truck holds 64 gallons of gas if the tank is 5/8 full how many gallons of gas is in truck
if f(x)=1/2 x-6 what is the equation for f–1(x)? A. f–1(x) = 2x + 6 B. f–1(x) = 2x – 6 C. f–1(x) = 2(x + 6) D. f–1(x) = 2(x – 6)
What is the simple interest for 1 year on a loan of $2000 at 9% interest?
14000 kg car is moving at the speed of 2 miles per second how much kinetic energy does the car have
How would you describe the shape of the Elodea leaf cell?
Why did the continental congress make federal goverment weak when it drew up the articles of confederation?
What is the answer to the problem?
Which body of water was most likely the center of roman?