3 years ago

How to get the variable alone in the equation 7x=28

Mathematics

1 answer:

Yakvenalex [24]3 years ago

4 0

Divide both sides by 7 to get the variable, x on its own:

X = 28/7

x = 4

Hope this helps you,

Have a great day

You might be interested in

3x + y = 19 , and x + 3y = 1.<br> Find the value of 2x + 2y<br> Can anyone explain this one for me?

velikii [3]

$First\ solve\ system\ of\ equations\ to\ find\ values\ of\ x\ and\ y\\\\ \left \{ {{3x+y=19\ \ |*(-3)} \atop {x+3y=1\ \ \ \ \ \ \ \ \ }} \right.\\\\ \left \{ {{-9x-3y=-57} \atop {x+3y=1 }} \right.\\+------\\Addition\ method\\\\
-8x=-56\ \ |:(-8)\\\\x=7\\\\y=19-3x=19-3*7=19-21=-2\\\\
2x+2y=2*7+2*(-2)=14-4=10\\\\Answer\ is\ 10.$

6 0

4 years ago

Read 2 more answers

Seperate 90 into two parts so that one part is four times the other

aalyn [17]

Answer:

18 and 72

Step-by-step explanation:

the smaller part can be assigned as x while the larger will be 4x. Both numbers need to add up to 90, giving the equation: 4x+x = 90

Solve:

4x+x = 90

5x = 90

x = 18

4x = 72

5 0

2 years ago

Math Pls I just moved and don't know how to do this.

iogann1982 [59]

Answer:

It is not

Step-by-step explanation:

Because "Kira" lol is doing something like saying 1-3 = 2 which it doesn't you have to regroup in this case and you can't do what she did, though what she did with her whole numbers is correct

I hope this helps!

3 0

3 years ago

Plz help I need help

Blababa [14]

Answer:

The first one!

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Need help asap please