How do you determine whether a given number makes an equation true?

Substitute

Step-by-step explanation:

To check it's really simple, just substitute the given for the variable.

For example, 2x + 5 = 11 and x = 3

2 ( 3 ) + 5 = 11

6 + 5 = 11

11 = 11, this means the given was correct.

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: