We know that 2x + 5 = 10 - 3x, and because of this we can solve for x.
2x + 5 = 10 - 3x
+3x
5x + 5 = 10
-5
5x = 5
/5
x = 1
We can plug x into each x value to verify if this is true.
2(1) + 5 = 10 - 3(1)
2 + 5 = 10 - 3
7 = 7
Answer:
y = -6/7
x = 6/49
Step-by-step explanation:
-7x -y = 0
7x +8y = -6
Add the two equations together to eliminate x
-7x -y = 0
7x +8y = -6
-----------------------
7y = -6
Divide by 7
7y/7 = -6/7
y = -6/7
Now we need to find x
-7x -y = 0
-7x -(-6/7) =0
-7x +(6/7) =0
-7x +6/7 -6/7 =0-6/7
-7x = -6/7
Divide each side by -7
-7x/-7 = -6/7 *-1/7
x = 6/49
y = |x|
This is absolute value because it's a v-shape.
Answer:
9
Step-by-step explanation:
13-4=9
the side with the 4 should add up to the side with the 13 so the answer is 9