# [SOLVED] help...someone pls explain

• Jan 9th 2006, 08:38 PM
pianogurl1250
[SOLVED] help...someone pls explain
i really dont understand this i feel like im goin around in circles....if u can help i owuld love that!!! :)

2/3(2c+5)=8 how do u do this?

also x/4 -15=10 would x b 100 or did i do that wrong?

an i think i did this one right too but im not sure....
7(2x-5)=28+5x....would this b -7/9?im not sure how i got that though
:confused:
• Jan 9th 2006, 10:55 PM
ticbol
Quote:

Originally Posted by pianogurl1250
i really dont understand this i feel like im goin around in circles....if u can help i owuld love that!!! :)

2/3(2c+5)=8 how do u do this?

also x/4 -15=10 would x b 100 or did i do that wrong?

an i think i did this one right too but im not sure....
7(2x-5)=28+5x....would this b -7/9?im not sure how i got that though
:confused:

Since there are many, 3, problems here, I will not explain very well. If there is only one problem then I can explain the solution better.

(2/3)(2c +5) = 8
Divide both sides by 2/3,
2c +5 = 8 /(2/3) = 8*(3/2) = 12
2c = 12 -5 = 7

----------------
x/4 -15 = 10
x/4 = 10 +15 = 25
Multiply both sides by 4,
x = 25*4 = 100 -----------------answer.

---------
7(2x -5) = 28 +5x
14x -35 = 28 +5x
14x -5x = 28 +35
9x = 63
x = 63 /9 = 7 ----------answer,
• Jan 10th 2006, 10:31 AM
ThePerfectHacker