# math

posted by .

Solve each formula for n.
2n = 4xp-6
3m-n=4s
r/n+2=p
t=100(n+3)
pv/nR=T
8a+2=6b

In the first example, divide both sides of the equation by 2
In the second example, add n to both sides of the equation.
Try these yourself. They aren't that hard. We will be glad to critique your work.
There is no "n" in the last example.

1. 2n=4xp-6
Divide 2 from both sides:
n=2xp-3

2. 3m-n=4s
Subtract 3m from both sides:
-n=-3m+4s
Divide -1 from both sides:
n=3m-4s

For the last one I meant -

8a+2n=6b

If 8a+2n=6b, then
2n = 6b - 8a
n = 3b - 4a

You seem to understand this pretty well.

• math -

A=1/2h(b+b) find the hieght if the base is cm and 8cm and the area is 56cm.

## Similar Questions

1. ### algerbra 1

what is the answer to 5x-16=14-5x Just giving you the answer is not what this forum is about. We'd be defeating the purpose of you assignment by doing that. Try to work the variables to one side, say the lefthand side, and the numbers …
2. ### algebra

I need a step by step explanation on how to add these two equations 2x+3y=1 5x+3y=16 Subtract the first equation from the second. (Subtract left and right sides separately). This gives you 3x = 15 Then divide both sides by 3. x = 5 …
3. ### science

rearrange this equation 2 make x the subect. 6y = 9 - 3x so first i add 3x to both sides which makes it 3x - 6y = 9 then do i divide both sides by 9 or wat?
4. ### maths

i have to make y the subject of this equation: 4t + 7y - 9 = 0 wod it be y = 4t + 9/7 ?
5. ### Algebra

I am re posting this for fear that it was overlooked earlier. I have also decided to show my work in the hopes of preventing any issues that might arise. Solve the absolute value equation. I y+3 I +5=2y Would the solutions be 8=y and …
6. ### ALGEBRA

I believe this answer to be correct. Just need to know. -13<= 4x-2<=-1; First equation:-13<=4x-2: ADD 2 TO BOTH SIDES; -13+2<=4X-2+2; -11<=4X; DIVIDE BOTH SIDES BY 4; X|-11/4<=X; Second Equation: 4x-2<=-1 ADD 2 …
7. ### Math

Emmy is 12. She writes an equation to find her mother's age, m. m - 12 + 35 What operation solves the equation for m?
8. ### simultaneous equations

Solve 2a + b = 3 4a - 5b = 20 My attempt Multiply the first equation by 5 So, 10a + 5b = 15 4a - 5b = 20 Add them together 14a = 35 Divide both sides by 14 a = 2.5 Substitute (I have done it with the second one) 10 - 5b = 20 Take away …
9. ### simultaneous equations

Solve 2a + b = 3 4a - 5b = 20 My attempt Multiply the first equation by 5 So, 10a + 5b = 15 4a - 5b = 20 Add them together 14a = 35 Divide both sides by 14 a = 2.5 Substitute (I have done it with the second one) 10 - 5b = 20 Take away …
10. ### Algebra

Which of the following describes a correct method for solving the equation below?

More Similar Questions