If 3a-2b= 8 and a+3b=7 what is the value of 4a+b?

Step 1: Find the value of one variable in terms of the other.



Step 2: Substitute the value you just found for this variable in the other equation.



Step 3: Use your new value for the second variable to find the first.



Now that we know the values for a and b we can find the value of 4a+b.

Add the cents that add the left overs to get the first number