-5(3x+2)=40?

Answer 1

Solve the "x" variable in the equation.

First: eliminate parenthesis - use the Distribution Method.

-5(3x) - 5(2) = 40
-15x - 10 = 40

Sec: combine "like" terms - add 10 with both sides (when you move a term to the opposite side, always use the opposite sign).

-15x - 10 +10 = 40+10
-15x = 40+10
-15x = 50

Third: solve "x" by isolating it on one side - divide both sides by -15.

-15x/-15 = 50/-15
x = -50/15 (simplify the fraction into lowest terms).
x = -10/3

P.S. the solution doesn't have to be in decimal form, unless your teacher asks you to do so :-)

Answer 2

-5(3x+2)=40
-15x -10 = 40
-15x -10 + 10 = 40 + 10
-15x = 50
x = 50/-15
x = -10/3
x = -3.33 (3.s.f)

Hope this helped

You can double chck by substituting this value back in

-5(3x-3.33+2) = 40
-5(-10+2) = 40
-5 x -8 = 40
40 = 40

Answer 3

-5(3x+2)=40
-15x - 10 = 40
Add 10:
-15x = 50
Divide by -15:
x = -10/3.

Answer 4

-5(3x+2)=40
-15x-10=40
-15x-10+10=40+10 (add 10 to both sides)
-15x=50
-x=50/15
x=-50/15 (multiply by -1 both sides)
x=-10/3 (divide numerator and denominator by 5)
x=-0.3.3333

Answer 5

First multiply the -5 by the items in parentheses, giving you...

-15x -10 = 40

Add 10 to both sides...

-15x = 50

Divide out the -15 and you have...

x = -10/3 or x = -3 1/3

Answer 6

-5 ( 3x + 2 ) = 40

Step 1 - Multiply out the brackets:

-15x - 10 = 40

Step 2 - To get rid of the -10 add 10 to each side:

-15x = 50

Step 3 - To get rid of the -15 you divide each side by -15 leaving you with what x is equal to:

x = -3.33

Answer 7

3x + 2 = -8 (dividing both sides by -5)
3x = -10
x = -10/3

Answer 8

-5(3x+2)=40
-15x+10=40
-10 -10
-15x=40
-x=2
x=-2

Answer 9

- 5(3x + 2) = 40

- 15x - 10 = 40

- 15x - 10 + 10 = 40 + 10

- 15x + 50

- 15x / - 15 = 50 / - 15

x = 50 / - 15

x = - 3.33333333. . .

- - - - - - -s-

Answer 10

-15x - 10 = 40, so
-15x = 50, or
x = -50/15 = -10/3