Question

Solve the following system Solve the following system of equations for the unknown variables.

x – 4 = 11

x + y = 21of equations for the unknown variables. x – 4 = 11 x + y = 21

Answer 1

Explanation:

x-4=11 and x+y= 21

a. Isolate one of the variables. Set x =

Add 4 to each side of x-4 = 11 to get x = 15

b. Now, substitute x=15 into x+y=21

So, 15+y = 21

Subtract 15 from each side to get y=

Now, 21-15 = 6 so y=6

x= 15 and y=6 so your answer is (15,6)