8th grade SHORT equations? Thanks!?

1. p=irt

divide ir from both sides.

p/ir=t

2. a=2(l+w)

divide both sides by 2.

1/2a=l+w

subtract l from both sides.

1/2a-l=w

3. Y= 5x-6

add 6 to both sides.

y+6=5x

divide both sides by 5.

y+6

----- = x

5

4. 2x-3y=b

this equation is already solved for b

5. X+y

____ = 5 solve for x

3

multiply both sides by 3.

x+y=15

subtract y from both sides.

x=15-y

6. Y=mx + b

subtract mx from both sides.

y-mx=b

7. ax + by = c

subtract ax from both sides.

by=c-ax

divide both sides by b.

c-ax

y= -----

b

8. V = LWH

divide both sides by WH.

V

---- =l

WH

9. W = 4(3.14)r

multiply 3.14 by 4

W=12.56r

divide both sides by 12.56

w/12.56=r

10. 7x-y=14

add y to both sides.

7x=14+y

divide both sides by 7.

x=2+1/7y

I'm not positive if these are all right so you should look them over. You should also learn to do your own homework because if you don't learn it yourself you won't do well on any tests or quizzes.

We don't all your homework here.

P= IRT solve for T

When a value changes sides, the numeric operation changes.

A=2(L+W)

A= 2L+2W

A -2L = 2W

A-2L ) /2 = w

..................

Y= 5x-6 solve for x

...............

Y=mx + b

Y-mx=b

y+6= 5x

(y+6)/5 = x

.............