Substitution is a useful method for checking if your answers to linear equations are correct. Here’s how it works:
Plug in your numbers: Start with the solution you found, like ( x = 2 ).
Replace in the original equation: If your equation is ( 2x + 3 = 7 ), put ( 2 ) in place of ( x ).
Check the result: Do the math: [ 2(2) + 3 = 4 + 3 = 7 ]
Since both sides equal, you know your solution is right!
This method is an easy way to make sure you didn’t make any errors.
Substitution is a useful method for checking if your answers to linear equations are correct. Here’s how it works:
Plug in your numbers: Start with the solution you found, like ( x = 2 ).
Replace in the original equation: If your equation is ( 2x + 3 = 7 ), put ( 2 ) in place of ( x ).
Check the result: Do the math: [ 2(2) + 3 = 4 + 3 = 7 ]
Since both sides equal, you know your solution is right!
This method is an easy way to make sure you didn’t make any errors.