Answer:
His answer is wrong.
Step-by-step explanation:
-4(6-R)=12 <-- Since R is negative, -4 times -R results in a positive so, 4R.
-24+4R=12
+24 +24
--------------------
4R = 36
R= 9
-10 - 1 = x
If you take -10 and subtract one, it makes the number go down lower because it's negative (example, 12 - 2 is -14)
Answer: 25
because its funnier than 24.