Algebra question

Question

Hello , please can someone help me with these equations , How do I sum and multiply them ? And thank you so much for helping

L + ( 3 - L ) =

L × ( 3 - L ) =

Answer 1

Hello Shahd,

For L + (3-L), you can remove the parenthesis and add everything as follows:

L + (3-L) = L + 3 - L

The "L" and the "-L" cancel out, leaving you with 3. Therefore: L + ( 3 - L ) = 3

For L x (3-L), because the outside L is being multiplied by the paretheses, you would distribute the L to the 3 AND the L as follows: L x (3-L) = L x 3 - L x L = 3L - L²

L × ( 3 - L ) = 3L - L²

Cheers.