3x=y
X+Y=20
5=x and 15=y are the answer. You can use elimination or substitution or guess and check!
Answer:
See Below
Step-by-step explanation:
Ok, this is just like the systems of equations.
x-7 = 5x-31
Solve
x-7 = 5x-31
-x -x
-7 = 4x -31
+31 +31
24 = 4x
24/ 4 = 4x/ 4
x=6
Hope this helps!=)
Answer:
B) 131°
Step-by-step explanation:
-4a + 139 = 4a + 123 because they are vertical angles
-4a + 139 = 4a + 123
reduce:
8a = 16
a = 2
4(2) + 123 = 131°
Step-by-step explanation:
Given
Answer:
I would solve this as Simplify the matrix.
Step-by-step explanation:
I would do 5+9
Then i would do 16+2
Then the 4 would be by it self
14=18=4
Then if you need to solve it more then i would just add 14 18 and 4 together