# Algebra

posted by .

40=-0.2x+45
i cant seem to solve this problem.

• Algebra -

40=-0.2x+45

Subtract 45 to both sides

-5=-0.2x

now divide -0.2 to both sides

-5/-0.2=x

A negative divdes by a negative gives you a positive

5/0.2=x

You can leave that like that or find the decimal form of it.

• Algebra -

40=-0.2x+45

0.2x = 45 - 40
0.2x = 5
x = 5/0.2
x = 25

Checking:

40 = -0.2x + 45
40 = -0.2 (25) + 45
40 = -5 + 45

• Algebra -

Thank you sooo much!

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### Algebra

How do I work this problem, it is not a homework problem but a problem similar to a homework problem. I know i need to factor the left side of the problem. here is what I have so far.. x^2-2x+1=7 x^2-2x+1-7=7-7 x^2-2x-6=0 here is where …
2. ### Algebra II- please help!

I just cannot seem to be able to grasp the concept of solving polynomial inequalities. Can someone please explain, step by step, how to solve them?
3. ### algebra

Help me solve this problem please, I have tried so many time.I can not seem to get the problem right. x +12 <-8 or x+12>2 x+ 12 < -8 =x +12 > 2 x =4 > -10 is this right
4. ### Algebra

Please Solve: 4-x=-5 I thought the answer was -9 but that doesn't seem to be it. Can someone please help?
5. ### math

can someone help me solve this problem -x/2+4=12 i got x=-16 but that didn't seem to be right
6. ### algebra homework

I am having some problem with solving a problem that the teacher gave to us. I ahving been working on it, but I just can't seem to get it. I keep getting the answer 2(y-2)/y+2. 3/y-3/2y+4
7. ### College Algebra

I need help factoring a problem and cant seem to get it right. The one I'm stumped on is 2x^2+7x+2. I have to compute as indicated and write final in the lowest terms. The whole problem is x^2-7x-18/x^2-6x-27*2x^2+7x+2/2x^2+5x+2
8. ### algebra

Find the square roots of 3+4i. The answer should be in the form a+bi?
9. ### Algebra

I've been try to solve this equation and I can't seem to get far. Do you add 3 to both sides?
10. ### Algebra 2 (Math)

Solve by the system of equations by substitution. x + 2y + z = 14 y = z + 1 x = -3z + 6 Anyone able to help me with this?

More Similar Questions