now think that:-
x=10
y=5
when you are asked to slove an equation say.....2x+4y=?.then we change the value of x and y into digits so we can work the problem out.
now since x=10.
then 2x is= 10*2
which is 20.
y=5
then 4y is=5*4
which is 20
now we have the value of 2X and 4Yso lets use it to get the answer
2x+4y=?
2x=20
2y=20
so now since we know the values of 2x 4y lets us write their values in the equation instead
so now it is 20+20=?
the answer is 40
the changing of the algebric structure 2x into 20 in the equation is called substitution
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DECREASE MEANS -
Math is short for Mathematics. It comes from an Ancient Greek root, meaning "to learn."
A gross is 144.
Not gunam its gunanam which means muliply.