Question

solve solution
3x+3y=27
x-3y=-11

Answer 1

There are many methods to do this. Ever heard of substitution or elimination ?

Answer 2

Add the equations to get

3x+3y=27
x-3y=-11
---------
4x+0y = 16


so we know that 4x = 16 ---> x = ???

Answer 3

yes

Answer 4

4

Answer 5

x = 4 is correct

Answer 6

now you use this x value to find the y value

Answer 7

3x+3y=27

3(4)+3y=27 ... replace x with 4

12 + 3y = 27

y = ??

Answer 8

??

Answer 9

I replaced x with 4 in the first equation 3x+3y=27

Answer 10

the goal from there is to solve for y

Answer 11

is it 4

Answer 12

12 + 3y = 27

12 + 3y-12 = 27-12 ... Subtract X from both sides.

3y = 15

y = ??

Answer 13

5

Answer 14

yes, together x = 4 and y = 5

the solution is the ordered pair (4,5)

Answer 15

oops typo, meant to say "Subtract 12 from both sides." but you get what I mean hopefully