SOLUTION: I don't understand how to simplify these answers. It says assume that no denominators are 0. Please show cancelling and factoring. 1. 11/12 ÷ x/10 2. b^2/5 ÷ b this one i

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I don't understand how to simplify these answers. It says assume that no denominators are 0. Please show cancelling and factoring. 1. 11/12 ÷ x/10 2. b^2/5 ÷ b this one i      Log On


   

Question 486863: I don't understand how to simplify these answers. It says assume that no denominators are 0. Please show cancelling and factoring.
1. 11/12 ÷ x/10
2. b^2/5 ÷ b
this one i really don't understand.
3. y^2-49/z^2+z ÷ y+7/z

thank you
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
1.
%2811%2F12%29+%3A+%28x%2F10%29.......here you have denominators 12 and 10 (none is equal to zero), and common denominator is 60; so first term 11%2F12 multiply by 5 second term x%2F10 multiply by 6
%2811%2A5%29%2F%2812%2A5%29+%3A+%28x%2A6%29%2F%2810%2A6%29

%2855%2F60%29+%3A%286x%2F60%29.......if denominators same, nominators must be same too

55%2F6x


2.
%28b%5E2%2F5%29%3A+b+
%28b%5E2%2F5%29%2F%28+b%2F1%29+
b%5E2%2F5b+
b%5Ecross%282%29%5E1%2F5cross%28b%29
b%2F5+


this one:
3.
%28%28y%5E2-49%29%2F%28z%5E2%2Bz%29%29%3A+%28%28y%2B7%29%2Fz%29%29


%28%28y%5E2-7%5E2%29%2F%28z%5E2%2Bz%29%29%2F%28%28y%2B7%29%2Fz%29%29

z%28y%5E2-7%5E2%29%2F%28%28z%5E2%2Bz%29%28y%2B7%29%29

%28z%28y-7%29%28y%2B7%29%29%2F%28z%28z%2B1%29%28y%2B7%29%29



%28y-7%29%2F%28z%2B1%29