Monday

December 22, 2014

December 22, 2014

Posted by **Emma** on Sunday, January 6, 2013 at 10:07pm.

1/8p+3/4q=7

3/2p-q=4

Thanks.

- Algebra -
**Reiny**, Sunday, January 6, 2013 at 11:19pm1st times 8 ----> p + 6q = 56 or p = 56-6q

2nd times 2 ---> 3p - 2q = 8

3(56-6q) - 2q = 8

168 - 18q - 2q = 8

-20q = -160

q = 8

then p = 56-6(8) = 8

**p= 8 and q = 8**

Notice how for both of your last two posts, I got rid of fractions to make the equations much more manageable.

**Answer this Question**

**Related Questions**

algebra - Requesting help. (I must reckon, that X is a variable, and y is y-...

maths - use the substitution method to solve the linear system. 1. 3x=9 -x+2y=9 ...

algebra - Use the substitution method to solve the linear system. Thanks! s= t+4...

Algebra - -3x + 2y = 8 x + 4y = -4 use substitution method to solve the linear ...

algebra - how do you use the substitution method to solve the linear system? -2x...

algebra - use method of substitution to solve the system of linear equation 3x+...

algebra 1 - use the substitution method to solve the linear system. 9x+6y=3 3x-...

algebra - use method of substitution to solve the system of linear equations. 2x...

Algebra - Use substitution method to solve the linear system. Can someone please...

math - Use a substitution method to solve the linear system 2a=8 a+b=2