SOLUTION: 1.{{3x-4(5-3x)=5(3x-4)}} show all work 2.{{-x +(2/5)=5(-4/3)x}} solve by clearing fractions show all work 3.{{H=1/4(x-2y)}} solve for x 4.{{7x-9 >=-2(x+4)}} solve then wr

Algebra ->  Expressions-with-variables -> SOLUTION: 1.{{3x-4(5-3x)=5(3x-4)}} show all work 2.{{-x +(2/5)=5(-4/3)x}} solve by clearing fractions show all work 3.{{H=1/4(x-2y)}} solve for x 4.{{7x-9 >=-2(x+4)}} solve then wr      Log On


   

Question 479030: 1.{{3x-4(5-3x)=5(3x-4)}} show all work
2.{{-x +(2/5)=5(-4/3)x}} solve by clearing fractions show all work
3.{{H=1/4(x-2y)}} solve for x
4.{{7x-9 >=-2(x+4)}} solve then write your solution in set notation, show work
5.{{P=2w+2l p=78cm.w=12cm. What is the length? show all work}}
Now this is what I got but I did not get them all so if you can write the correct answer as showing all work I would greatly appreciate it.
I have not been to school in 32 thirty two years and this is overwhelming me.
1.3x-4(5-3x)=5(3x-4)
3x-20-12x)=15x-20
15x-20=15x-20


Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
1.{{3x-4(5-3x)=5(3x-4)}} show all work
3x-20+12=15x-20 ( when you multiply two negative numbers the result is positive)
3x-8=15x-20
3x-15x=-20+8
-12x=-12
so
x=1
2.-x+%2B%282%2F5%29=5%28-4%2F3%29x solve by clearing fractions show all work
The LCD for the equation is 5*3=15
Multiply the equation by 15
-15x+(2/5)*15 =5(-4/3)*15x
-15x+6=-100x
85x=-6
x=-6/85


3.{{H=1/4(x-2y)}} solve for x
Cross multiply
H(4(x-2y))=1
4Hx-8Hy=1
4Hx= 8Hy+1
divide by 4H
x=2y+1/4H
4.{{7x-9 >=-2(x+4)}} solve then write your solution in set notation, show work
7x-9 >=-3x-8
10x>=1
x>=1/10
A={x|x>=1/10}
5.{{P=2w+2l l=78cm.w=12cm. What is the length? show all work}}
P=2*78+2*12
P=156+24
P=180