Answer:
r = 14
Step-by-step explanation:
9r - 66 = 116 - 4r
+4r +4r
13r - 66 = 116
+66 +66
13r = 182
divide both sides by 13
r = 14
Hope this helps!!!
Here we multiply the 2nd eqation with -1 and then add both
and answer is
-6y=12
The are 8 blue bicycles, 6 green bicycles, and 4 yellow bicycles and total they equal 18.