18×(-45)+(-45)×(-18) math

I am not understanding find the equivalent fraction

Hi

X+1 

X=3
Y=?
Find Y 
2X-3Y=35

{2,4,6,8,16,32} write it in the set builder form

One fifth of a number  gives 3

What is the formula of mean deviation

Explain What is composite number?

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Let p=4q+3r and 3p=2q-3r then.

Why

How to solve mean

Forumala

Intigration of dx by 1+tanx

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If one root of the qudratic equation is 3 + root 2