3x + 3y = 27
x - 3y = -11
----------------add
4x = 16
x = 16/4
x = 4
3x + 3y = 27
3(4) + 3y = 27
12 + 3y = 27
3y = 27 - 12
3y = 15
y = 15/3
y = 5
solution is (4,5)
Answer is, that he has 18 feet left over. hope this helps
Answer:


Step-by-step explanation:
Given:
The given expressions are.

We need to find x and y values.
Solution:
Equation 1⇒
Equation 2⇒ 
First solve the equation 1 for y.
--------(3)
Substitute
in equation 2.

Simplify.



Add 16 both side of the equation.



Divide Numerator and denominator by 5.

Substitute x value in equation 3 and simplify.





.
Therefore, the value of
and
.
Answer:
65
Step-by-step explanation:
Joshua has 390 photos, you need to divide that number by the each amount of photos in each page to figure out how many pages he needs to paste all them.
So you'd divide it like. 390 / 6
And that gives you 65.