-3(5-9v)=25+7v; What does the v represent and how do I get to the correct answer?

Question

when you distribute the -3 to the 5 doesnt that equal -15 and not -8???

or how to you get the -8?

Answer 1

-3(5-9v)=25+7v
-15+27v=25+7v
27v-7v=25+15
20v=40
v=40/20
v=2

Answer 2

v is what you are solving for. First distribute the -3 so you would get the following: -15+27v=25+7v. Then isolate the v on one side by adding 15 to both sides and then subtracting 7v fromboth sides so you shoudl get the following: 20v=40 Then divide each side by 20 to solve for v and you get v=2!

-3(5-9v)=25+7v
-15+27v=25+7v
27v=40+7v
20v=40
v=2

Answer 3

v= the variable, the unknown term. Since you know all the other terms (cause they're defined by numbers), this is the one you have to find the value of......and you do it like this:

You get rid of the parentheses
-3 * 5 + 3 * 9v = 25 + 7v
-15 + 27v = 25 + 7v

Than you get all the terms that contain v on the left, and all the others on the right (do not forget..... when you change one term from one side to the other, its sign also changes)
27v - 7 v = 25 + 15
20v = 30
v = 30/ 20 = 1.5

Answer 4

the variable is v, and to solve the problem, you must isolate a single instance of v. To do that, we need to first make the problem solveable, meaning there can be no parenthesis.

To get rid of the parentesis, you must multiply the outside value (-3) by all values on the inside. That makes the next line of the equation:
-15+27v=25+7v

now, we want to get all the variables on one side, and all the numeric values on the other. To make v end up being a positive value, we'll do this by subtracting 7v from both sides, and, at the same time, adding 15 to both sides.
-15+27v=25+7v
+ 15- 7v =+15-7v
---------------------------
leaves you with 27v - 7v, for a total of 20v on one side, and 25+15, for a total of 40 on the other side, so you now have:
20v = 40

divide both sides by 20 (to make v a single value), and you get v = 2

Equations like this are just basic math. The only trick is keeping the variables separate from the non variables. Other than that, these are just basic addition/subtraction/multiplication/division problems, and remembering your order of operations.

Answer 5

v is the variable that you are looking for...

To solve for v:
-3 (5 - 9v) = 25 + 7v
-15 + 27v = 25 + 7v
27v - 7v = 25 + 15
20v = 40
v = 40/20
v = 2

To prove (substitute v with 2):
-3 (5 - (9)(2)) = 25 + (7)(2)
-3 (5 - 18) = 25 + 14
-3 (-13) = 39
39 = 39

So the value for v is 2

-*Good Luck*-

Answer 6

-3 (5 - 9v) = 25 + 7v
-15 + 27v = 25 + 7v
27v - 7v = 25 + 15
20v = 40
v = 40 / 20
v = 2

Answer 7

first multiply (5-9v) by -3
-15 + 27v = 25 + 7v
next get your variable (v) on one side
which can be done by subtracting 7v
from both sides
(hint: if 7v had been negative, then
you would have added it)
-15 + 27v - 7v = 25 + 7v - 7v
-15 + 20v = 25
now add 15 to both sides
- 15 + 15 + 20v = 25 + 15
20v = 40
divide both sides by 20
v represents 2

Answer 8

-3 (5-9v) = 25 + 7v

-7v+9v = 25+(3x5)

2v = 25+15

2v = 40; therefore: v = 40/2 = 20.

Answer 9

-3(5-9v)=25+7v
-8+27v=25+7v
20v=33
v=33/20

Answer 10

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