How do you solve #x = y + 3# and #2x + y = 9# using substitution?
You are given 2 variables, decide which variable you want to be substituted and what equation will be your base equation to plug in your value.
1, In this case,
2. From your base equation, substitute the value of
3. Now, as reflected above, you have only one variable and you can now find the value
4. Then simplify the equation and combine like terms if applicable until you can arrive the value of y;
5. Isolate the term with
6. The value of y = 1
7. To find the value of
8. Always remember to plug in values of