Answer :
Answer:
-6
Step-by-step explanation:
STEP 1= bring all the unknown factors together and the known factors toghether
-2+8=9r-10r
STEP2= SOLVE IT
+6=-1R
thus r= -6
Answer:
-6
Step-by-step explanation:
STEP 1= bring all the unknown factors together and the known factors toghether
-2+8=9r-10r
STEP2= SOLVE IT
+6=-1R
thus r= -6