What does substituting in maths mean?

Answer 1

In algebra when you substitute a letter in the equation for a number

e.g.

x+3= 5

therefore: 5-3= 2

if you substitute 2 into the equation you can see if you are right

e.g. 2+3= 5

Hope this helps

Answer 2

First, it's math not maths. Second, substitution is taking a variable and replacing it with a number or another variable. This is usually related to proofing and properties in Geometry.

Answer 3

heyy you should go and fall in a hole