Answer:










Step-by-step explanation:

2(5x-15) + 2(2x+7) =0
10x-30+4x+14 = 0
14x = 16
x = 8/7
Answer:
Try taking a screen shot as this is indecipherable.
Step-by-step explanation:
Answer: y=4
Step-by-step explanation:
9/4y-12=1/4y-4+12
+12. +12
9/4y=1/4y+8
-1/4y -1/4y
2y/2=8/2
y=4
Answer:
x=3
Step-by-step explanation:
It is pretty simple.
x = 3 means literally just a vertical line at +3 on the x-axis.
In contrast, y = 3 would mean a horizontal line at +3 on the y-axis.
If you would like to see this for yourself pull-up desmos on your browser and type it into the graphing calculator of desmos.