diff --git a/src/ejercicios.js b/src/ejercicios.js
index 4ff1a5e..656c090 100644
--- a/src/ejercicios.js
+++ b/src/ejercicios.js
@@ -1,19 +1,75 @@
-export function multiplicarPor10(array) {}
+export function multiplicarPor10(array) {
+    return array.map(element => element * 10)
+}
 
-export function soloPares(array) {}
+export function soloPares(array) {
+    return array.filter(element => element % 2 === 0)
+}
 
-export function moverALaDerecha(array) {}
+export function moverALaDerecha(array) {
+    const arrayCopy = [...array];
 
-export function soloUnaPalabra(array) {}
+    return arrayCopy.map((element, index, arr) => {
+        return index ? arr[index - 1] : index === 0 ? arr[arr.length - 1] : "";
+    })
+}
 
-export function soloArraysPositivos(array) {}
+export function soloUnaPalabra(array) {
+    return array.filter(element => !element.includes(" "))
+}
 
-export function soloVocales(array) {}
+export function soloArraysPositivos(array) {
+    return array.filter(element => element.every(item => item > 0))
+}
 
-export function todasVocalesIguales(array) {}
+export function soloVocales(array) {
+    const rex = /[bcdfghjkmnlpqrstqvwxyz]/;
+    return array.map(element => {
+        return element.split("").map(item => {
+            if (rex.test(item)) {
+                item = ""
+            } else {return item}
+        }).join("") 
+    })
+}
 
-export function duplicarMatriz(array) {}
+export function todasVocalesIguales(array) {
+    const rex = /[aeiou]/
+    const checkforSameVocals = (word) => {
+        const wordSplit = [...word]
+        const vocalsMapped = wordSplit.filter(letter => {
+            return rex.test(letter)
+        })
+      return vocalsMapped.every((item, _index, arr) => item === arr[0])  
+    }
+    
+    return array.filter(element => {
+        return checkforSameVocals(element)
+    })
+}
 
-export function mayoresDeEdadValidados(array) {}
+export function duplicarMatriz(array) {
+    return array.map(element => {
+        return element.map(item => {
+            return item * 2
+        })
+    })
+}
 
-export function transformarObjetoEnArray(objeto) {}
+export function mayoresDeEdadValidados(array) {
+    return array.map(element => {
+    if (element.edad > 18) {
+        element.mayor = true;
+    } else {
+       element.mayor = false;
+    }
+ return element
+    })
+}
+
+export function transformarObjetoEnArray(objeto) {
+    const objectToArray = Object.entries(objeto)
+    return objectToArray.map(element => {
+        return Object.assign({id: element[0]}, element[1])  
+    })
+}