Posted by **Emily** on Tuesday, February 19, 2013 at 6:17am.

Please show the solutions!

1.) x+y-2(2x-3y)

2.) x+y/2 - 3x-y/4 + x-5y/8

3.) 4x- {3x-[(x-3)-2(x-5)]}

4.) a+5b/2 + a-3b/3 - 5(a-b)/6

5.) 2x-5=3x-9

6.) 3x-(2x-7)=2x+3

7.) 7x+2/6 - x-4/3 = x+3/3

8.) 3x-2(x-3)+3(5-2x)

9.) x+1/3 - x-2/4 - x/6

10) 5(2x-5)=3(2x-11)

11) 0.5x+3=1.2x+5.8

- Math -
**Emily**, Tuesday, February 19, 2013 at 6:21am
Ahmad is 7 years older than Bala. Four years ago, Ahmad was twice as old as Bala. Find the sum of their ages in 7 years' time.

- Math -
**Emily**, Tuesday, February 19, 2013 at 6:28am
A father is three times as old as his son. In 13 years' time, the father will only be twice as old as his son. Find their present ages.

(Please show the solutions clearly)

- Math -
**Reiny**, Tuesday, February 19, 2013 at 10:03am
If you are studying this topic, surely you can't be having problems with every one of them.

Can you tell us where you are having problems ?

I will do the 1st of the age problems:

present time:

Bala --- x

Ahmad -- x+7

Four years ago:

Bala --- x-4

Ahmad -- x+7 - 4 = x+3

At that time "Ahmad was twice as old as Bala"

---> x+3 = 2(x-4)

x+3 = 2x-8

-x = -11

x = 11

so right now, Bala is 11 and Ahmad is 18

in 7 yrs from now:

Bala will be 18 and Ahmad will be 25

Set up the second one in a similar way.

## Answer this Question

## Related Questions

- Algebra - Can someone please show me the steps to this problem? I get 0,1 as ...
- Math ~CHECK MY WORK PLEASE~ - Hello, Please check my answers, with stars (*) are...
- @someone who can show me how to do this - Hi I'm Aluminum<3 Helping and C.S.I...
- Math - I am stuck on trying to figure out how to do this question. Could someone...
- math - What would your solution set be? Please be sure to show your work so that...
- math - The number of real solutions to the system of equations y=2sin(x^2) and y...
- math - Help please select the approcimate values of x that are solutions to f(x...
- Math (Calc) - Find all solutions to the following equation on the interval 0<...
- Math check - Decide whether each equation has one, no solutions, or infanatly ...
- Math - 2 - Solve the exponential equation. Express your solutions in exact form ...