Math

posted by .

how do you do this??

-4x-7=-2(x+3)

• Math -

-4x-7=-2(x+3)

Multiply -2 by each term inside the parenthesis (x+3).

-4x-7=(-2(x)-2(3))

Complete the multiplication of -2 by each term inside the parenthesis.

-4x-7=(-2x-6)

Remove the parenthesis around the expression -2x-6.

-4x-7=-2x-6

Since -2x contains the variable to solve for, move it to the left-hand side of the equation by adding 2x to both sides.

-4x-7+2x=-6

Since -4x and 2x are like terms, subtract 2x from -4x to get -2x.

-2x-7=-6

Since -7 does not contain the variable to solve for, move it to the right-hand side of the equation by adding 7 to both sides.

-2x=7-6

Subtract 6 from 7 to get 1.

-2x=1

Divide each term in the equation by -2.

Simplify the left-hand side of the equation by canceling the common terms.

Simplify the right-hand side of the equation by simplifying each term.
therefore x = -1/2

Similar Questions

1. math

all i can say is math stinx dont mess with math. without math, a lot of things wouldn't exist right now...
2. Math...For All Math Tutors

I would like to know how many of the people answering math questions here are current math teachers, were math teachers at one time, are current tutors working for a tutoring company or simply love math. What's your story?
3. English Grammar

A: What time is your math/Math class? B: At eleven forty-five. Do we have to use 'math' or 'Math'?

Actual question on homework."EXPLAIN HOW YOU CAN BREAK APART ARRAYS WHEN YOU MULTIPLY BY 3." (there is no array on the paper to use) I don't like this new math, what was wrong with the old math I learned, I am Accounting /Finance supervisor, …
5. math

I just do not understand how to figure this out. Find the number of subsets of the given set. {math, English, history, science, art} Would I do something like this: 1. {} 2. Math 3. English 4. history 5. science 6. art 7. Math and …
6. Math

Is IB Math Studies the same as Pre-Calculus?
7. LNU

math In a class of 50 students it was found 21 are taking English 14 are taking Math 28 are taking History 7 are taking Math and English 10 are taking Math and History 11 are taking History and English 3 are taking all three courses …
8. math

What is temperature when you do math. In seventh grade math is hard and I don't understand what my teachers tell me they say that it is easy but i don't think it is i need a lot of help during math it used to be my favorite subject …
9. English

I'm worried about my math. 1. Why don't you buy a math self- teaching book and solve math problems a lot. 2. Why don't you buy a math self-study book and solve math problems a lot. 3. Why don't you go to a math academy and study math …
10. Math

A fertilizer covers 5/8 square foot in 1/4 hour. i don't understand how to work out this math problem. By the way i'm in 6th grade but technically doing advanced math so i'm doing 7th grade math. I don't know how to do this

More Similar Questions