Saturday

April 18, 2015

April 18, 2015

Posted by **Sara** on Thursday, July 19, 2007 at 9:28pm.

S = a/(1-r)

Multiply both sides by 1-r

S*(1-r) = [(1-r)*a]/(1-r)

Simplify

S*(1-r) = a

Multiply terms on the left.

S - S*r = a

Subtract S from both sides.

S-S*r - S = a - S

Simplify

-S*r = a - S

Multiply both sides by -1

S*r = -a+S

Divide both sides by S

S*r/S = (-a + S)/S

r = (S-a)/S

Check my work carefully.

**Answer this Question**

**Related Questions**

math - how do you solve 9x=6 9x=6 Divide both side by 9. (Remember you can add, ...

Algebra - 89. Solve for x in the equation: 6/7x - 6 = -2 I posted this before, ...

Maths - you have to solve the following by finding the value of x and y. can u ...

Algebra 2 - -2/3x + 3<11 how do i solve this equation Subtract 3 from both ...

please help math - x/3-2/3=1/x *Solve the rational below. I really need help. ...

algebra - I need a step by step explanation on how to add these two equations 2x...

MATH PLEASE CHECK IT!!2 - m-2/m-5*m+5/m-2=-1 If your problem is this: (m - 2)/(m...

ALGEBRA - Select all the statements that can be used as steps to solve the ...

Algebra - Select all the statements that can be used as steps to solve the ...

Algebra - Solve Q= (N-S)/ N for N So when I multiply both sides by N I get Q(N...