Tuesday

September 23, 2014

September 23, 2014

Posted by **Rox** on Wednesday, February 13, 2013 at 6:22am.

2/x−24/y=−1

and

6/x+33/y=2.

Find the product xy.

- maths -
**Bosnian**, Wednesday, February 13, 2013 at 9:42am2 / x − 24 / y = − 1 Divide both sides by 2

1 / x - 12 / y = - 1 / 2 Add 12 / y to both sides

1 / x - 12 / y + 12 / y = - 1 / 2 + 12 / y

1 / x = 12 / y - 1 / 2

6 / x + 33 / y = 2

6 * ( 12 / y - 1 / 2 ) + 33 / y = 2

72 / y - 6 * 1 / 2 + 33 / y = 2

72 / y - 3 + 33 / y = 2

105 / y - 3 = 2 Add 3 to both sides

105 / y - 3 + 3 = 2 + 3

105 / y = 5 Divide both sides by 5

21 / y = 1 Multipy both sides by y

y * 21 / y = 1 * y

21 = y

y = 21

1 / x = 12 / y - 1 / 2

1 / x = 12 / 21 - 1 / 2

1 / x = 3 * 4 / ( 3 * 7 ) - 1 / 2

1 / x = 4 / 7 - 1 / 2

1 / x = 8 / 14 - 7 / 14

1 / x = 1 / 14

Reciprocal:

x = 14

x * y = 14 * 21 = 294

**Answer this Question**

**Related Questions**

algebra - The variables x and y satisfy the equations 2/x−24/y=−1 ...

mathematics - x,y and z are complex numbers that satisfy the equations x+y+z=2, ...

biology - Given the part of the molecule shown below, can the underlined atom ...

Product of Roots of Sums of Products of Difference - What is the product of all ...

Product of Roots of Sums of Products of Difference - What is the product of all ...

math - The number 27+200−−−√−−−−...

calculus - Find an equation for the surface consisting of all points P(x, y, z) ...

MATHS - The number 2+3√+5√−−−−−−...

Math - Find a system of linear equations corresponding to the following ...

Grade 12 Calculus - Evaluate each of the following. Show all your calculations...