<h2 class="f3" id="keys-to-success">Keys to Success:<a class='anchor' href='#keys-to-success' aria-label="Permalink to Keys to Success:" role="complementary" aria-hidden="true">#</a></h2>To be able to add or subtract matrices have to be the same size.<h2 class="f3" id="worked-examples">Worked Examples:<a class='anchor' href='#worked-examples' aria-label="Permalink to Worked Examples:" role="complementary" aria-hidden="true">#</a></h2><img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_0C3E2B74-1C54-40AE-AE6D-BABCA6F081EF/public" style="background-color:#FEFEFE;max-width:min(100%,770px);max-height:min(420px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_0C3E2B74-1C54-40AE-AE6D-BABCA6F081EF/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="770" height="420"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_AD32D0AF-4D0A-410A-8B42-FD3E15E6B2CA/public" style="background-color:initial;max-width:min(100%,1536px);max-height:min(1100px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_AD32D0AF-4D0A-410A-8B42-FD3E15E6B2CA/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="1536" height="1100"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_CC5C62C0-78AE-4B77-BF48-058ED14E7166/public" style="background-color:#FEFEFE;max-width:min(100%,672px);max-height:min(411px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_CC5C62C0-78AE-4B77-BF48-058ED14E7166/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="672" height="411"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_A9ABAB8B-EEB4-40E1-B9D7-A70A6CAAFFBA/public" style="background-color:initial;max-width:min(100%,1536px);max-height:min(542px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_A9ABAB8B-EEB4-40E1-B9D7-A70A6CAAFFBA/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="1536" height="542"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_A2E9A9BA-C0BC-4A5B-B0DD-E6A94BCBB31B/public" style="background-color:#FFFFFF;max-width:min(100%,2369px);max-height:min(1504px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_A2E9A9BA-C0BC-4A5B-B0DD-E6A94BCBB31B/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="2369" height="1504"><a class='tag' href="/tags/GraphsFunctionsAndSystems">#GraphsFunctionsAndSystems</a>