-7-5w-7w=5-9w
First collect like terms on the left side
-7-12w=5-9w
Now bring the -7 +7 +7
to the right side Now since -7 + 7 is zero,
It cancels out, 5 + 7 is 12!
-12w = 12 -9w
+9 +9
Now, bring -9 to the -9 + 9 cancels out
left side
-12 + 9 is -3
-3w = 12
Lastly, dived -3 by 12
W = -4